http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
index 842f618..fb1574d 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/MemoryPolicyInitializationTest.java
@@ -73,7 +73,7 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
 
         IgniteEx ignite = startGrid(0);
 
-        Collection<MemoryPolicy> allMemPlcs = 
ignite.context().cache().context().database().memoryPolicies();
+        Collection<DataRegion> allMemPlcs = 
ignite.context().cache().context().database().dataRegions();
 
         assertTrue(allMemPlcs.size() == 2);
 
@@ -89,7 +89,7 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
 
         IgniteEx ignite = startGrid(0);
 
-        Collection<MemoryPolicy> allMemPlcs = 
ignite.context().cache().context().database().memoryPolicies();
+        Collection<DataRegion> allMemPlcs = 
ignite.context().cache().context().database().dataRegions();
 
         assertTrue(allMemPlcs.size() == 3);
 
@@ -110,13 +110,13 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
 
         IgniteCacheDatabaseSharedManager dbMgr = 
ignite.context().cache().context().database();
 
-        Collection<MemoryPolicy> allMemPlcs = dbMgr.memoryPolicies();
+        Collection<DataRegion> allMemPlcs = dbMgr.dataRegions();
 
         assertTrue(allMemPlcs.size() == 2);
 
         verifyDefaultAndSystemMemoryPolicies(allMemPlcs);
 
-        MemoryPolicy dfltMemPlc = U.field(dbMgr, "dfltMemPlc");
+        DataRegion dfltMemPlc = U.field(dbMgr, "dfltDataRegion");
 
         assertTrue(dfltMemPlc.config().getMaxSize() == 
USER_DEFAULT_MEM_PLC_SIZE);
     }
@@ -134,13 +134,13 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
 
         IgniteCacheDatabaseSharedManager dbMgr = 
ignite.context().cache().context().database();
 
-        Collection<MemoryPolicy> allMemPlcs = dbMgr.memoryPolicies();
+        Collection<DataRegion> allMemPlcs = dbMgr.dataRegions();
 
         assertTrue(allMemPlcs.size() == 3);
 
         verifyDefaultAndSystemMemoryPolicies(allMemPlcs);
 
-        MemoryPolicy dfltMemPlc = U.field(dbMgr, "dfltMemPlc");
+        DataRegion dfltMemPlc = U.field(dbMgr, "dfltDataRegion");
 
         assertTrue(dfltMemPlc.config().getMaxSize() == 
USER_CUSTOM_MEM_PLC_SIZE);
     }
@@ -220,7 +220,7 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
     private void verifyCacheMemoryPolicy(IgniteCache cache, String plcName) {
         GridCacheContext ctx = ((IgniteCacheProxy) cache).context();
 
-        assertEquals(plcName, ctx.memoryPolicy().config().getName());
+        assertEquals(plcName, ctx.dataRegion().config().getName());
     }
 
     /**
@@ -278,12 +278,12 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
     /**
      * @param allMemPlcs Collection of all memory policies.
      */
-    private void verifyDefaultAndSystemMemoryPolicies(Collection<MemoryPolicy> 
allMemPlcs) {
+    private void verifyDefaultAndSystemMemoryPolicies(Collection<DataRegion> 
allMemPlcs) {
         assertTrue("Default memory policy is not presented",
                 isMemoryPolicyPresented(allMemPlcs, 
DFLT_MEM_PLC_DEFAULT_NAME));
 
         assertTrue("System memory policy is not presented",
-                isMemoryPolicyPresented(allMemPlcs, 
IgniteCacheDatabaseSharedManager.SYSTEM_MEMORY_POLICY_NAME));
+                isMemoryPolicyPresented(allMemPlcs, 
IgniteCacheDatabaseSharedManager.SYSTEM_DATA_REGION_NAME));
     }
 
     /**
@@ -303,8 +303,8 @@ public class MemoryPolicyInitializationTest extends 
GridCommonAbstractTest {
      * @param memPlcs Collection of memory policies.
      * @param nameToVerify Excepted name of memory policy.
      */
-    private boolean isMemoryPolicyPresented(Collection<MemoryPolicy> memPlcs, 
String nameToVerify) {
-        for (MemoryPolicy memPlc : memPlcs) {
+    private boolean isMemoryPolicyPresented(Collection<DataRegion> memPlcs, 
String nameToVerify) {
+        for (DataRegion memPlc : memPlcs) {
             if (nameToVerify.equals(memPlc.config().getName()))
                 return true;
         }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheRestoreTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheRestoreTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheRestoreTest.java
index 25626f4..577cf9a 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheRestoreTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsCacheRestoreTest.java
@@ -21,9 +21,9 @@ import java.util.Arrays;
 import java.util.List;
 import org.apache.ignite.IgniteCache;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
 import org.apache.ignite.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder;
@@ -40,6 +40,9 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
     /** */
     private static final TcpDiscoveryIpFinder IP_FINDER = new 
TcpDiscoveryVmIpFinder(true);
 
+    /** Non-persistent data region name. */
+    private static final String NO_PERSISTENCE_REGION = 
"no-persistence-region";
+
     /** */
     private CacheConfiguration[] ccfgs;
 
@@ -55,17 +58,18 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
             ccfgs = null;
         }
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
-        memCfg.setPageSize(1024);
-        memCfg.setDefaultMemoryPolicySize(10 * 1024 * 1024);
-
-        cfg.setMemoryConfiguration(memCfg);
-
-        PersistentStoreConfiguration pCfg = new PersistentStoreConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(10 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setPageSize(1024)
+            .setWalMode(WALMode.LOG_ONLY);
 
-        pCfg.setWalMode(WALMode.LOG_ONLY);
+        memCfg.setDataRegionConfigurations(new DataRegionConfiguration()
+            .setMaxSize(10 * 1024 * 1024)
+            .setName(NO_PERSISTENCE_REGION)
+            .setPersistenceEnabled(false));
 
-        cfg.setPersistentStoreConfiguration(pCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         return cfg;
     }
@@ -137,14 +141,22 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
 
         IgniteCache<Object, Object> cache2 = ignite(2).cache("c2");
 
+        IgniteCache<Object, Object> cache3 = ignite(2).cache("c3");
+
         for (Integer key : keys) {
             assertEquals(key, cache1.get(key));
 
             assertNull(cache2.get(key));
 
+            assertNull(cache3.get(key));
+
             cache2.put(key, key);
 
             assertEquals(key, cache2.get(key));
+
+            cache3.put(key, key);
+
+            assertEquals(key, cache3.get(key));
         }
 
         List<Integer> nearKeys = nearKeys(cache1, 10, 0);
@@ -152,6 +164,10 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
         for (Integer key : nearKeys) {
             assertNull(cache1.get(key));
             assertNull(cache2.get(key));
+            assertNull(cache3.get(key));
+
+            cache3.put(key, key);
+            assertEquals(key, cache3.get(key));
 
             cache2.put(key, key);
             assertEquals(key, cache2.get(key));
@@ -165,6 +181,8 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
         awaitPartitionMapExchange();
 
         for (Integer key : nearKeys) {
+            assertEquals(key, cache3.get(key));
+
             assertEquals(key, cache2.get(key));
 
             assertEquals(key, cache1.get(key));
@@ -186,10 +204,13 @@ public class IgnitePdsCacheRestoreTest extends 
GridCommonAbstractTest {
      * @return Configurations set 1.
      */
     private CacheConfiguration[] configurations2() {
-        CacheConfiguration[] ccfgs = new CacheConfiguration[2];
+        CacheConfiguration[] ccfgs = new CacheConfiguration[3];
 
         ccfgs[0] = cacheConfiguration("c1");
         ccfgs[1] = cacheConfiguration("c2");
+        ccfgs[2] = cacheConfiguration("c3");
+
+        ccfgs[2].setDataRegionName(NO_PERSISTENCE_REGION);
 
         return ccfgs;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsMultiNodePutGetRestartTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsMultiNodePutGetRestartTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsMultiNodePutGetRestartTest.java
index b8db802..615e108 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsMultiNodePutGetRestartTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsMultiNodePutGetRestartTest.java
@@ -30,9 +30,10 @@ import org.apache.ignite.cache.query.SqlFieldsQuery;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -40,7 +41,6 @@ import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
 import org.apache.ignite.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder;
 import org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder;
 import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
-import org.apache.ignite.configuration.MemoryConfiguration;
 
 import static 
org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager.DFLT_STORE_DIR;
 
@@ -61,18 +61,12 @@ public class IgnitePdsMultiNodePutGetRestartTest extends 
GridCommonAbstractTest
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(100 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(100 * 1024 * 1024);
-        memPlcCfg.setMaxSize(100 * 1024 * 1024);
-
-        dbCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-        dbCfg.setMemoryPolicies(memPlcCfg);
-
-        cfg.setMemoryConfiguration(dbCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration ccfg = new CacheConfiguration(CACHE_NAME);
 
@@ -86,7 +80,6 @@ public class IgnitePdsMultiNodePutGetRestartTest extends 
GridCommonAbstractTest
 
         cfg.setCacheConfiguration(ccfg);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration());
         cfg.setDiscoverySpi(new TcpDiscoverySpi().setIpFinder(IP_FINDER));
 
         cfg.setMarshaller(null);

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionDuringPartitionClearTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionDuringPartitionClearTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionDuringPartitionClearTest.java
index c1bec35..3dfdc57 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionDuringPartitionClearTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionDuringPartitionClearTest.java
@@ -25,10 +25,9 @@ import org.apache.ignite.cache.CacheRebalanceMode;
 import org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.IgniteInternalFuture;
@@ -60,26 +59,12 @@ public class IgnitePdsPageEvictionDuringPartitionClearTest 
extends GridCommonAbs
         cfg.setCacheConfiguration(ccfg);
 
         // Intentionally set small page cache size.
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(70 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setInitialSize(70 * 1024 * 1024);
-        memPlcCfg.setMaxSize(70 * 1024 * 1024);
-
-        memPlcCfg.setName("dfltMemPlc");
-
-        MemoryConfiguration memCfg = new MemoryConfiguration();
-
-        memCfg.setMemoryPolicies(memPlcCfg);
-
-        memCfg.setDefaultMemoryPolicyName(memPlcCfg.getName());
-
-        cfg.setMemoryConfiguration(memCfg);
-
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalMode(WALMode.LOG_ONLY)
-        );
+        cfg.setDataStorageConfiguration(memCfg);
 
         return cfg;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionTest.java
index 13cd8b4..47d0cb2 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsPageEvictionTest.java
@@ -27,10 +27,10 @@ import 
org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.cache.query.SqlFieldsQuery;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.CacheConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.util.typedef.internal.S;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -58,22 +58,14 @@ public class IgnitePdsPageEvictionTest extends 
GridCommonAbstractTest {
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(50 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY)
+            .setPageSize(1024)
+            .setConcurrencyLevel(Runtime.getRuntime().availableProcessors() * 
4);
 
-        memCfg.setConcurrencyLevel(Runtime.getRuntime().availableProcessors() 
* 4);
-
-        memCfg.setPageSize(1024);
-
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(50 * 1024 * 1024);
-        memPlcCfg.setMaxSize(50 * 1024 * 1024);
-
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration<DbKey, DbValue> ccfg = new 
CacheConfiguration<>(CACHE_NAME);
 
@@ -84,8 +76,6 @@ public class IgnitePdsPageEvictionTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration());
-
         cfg.setDiscoverySpi(
             new TcpDiscoverySpi()
                 .setIpFinder(IP_FINDER)

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsRebalancingOnNotStableTopologyTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsRebalancingOnNotStableTopologyTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsRebalancingOnNotStableTopologyTest.java
index 546a87a..893ecb5 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsRebalancingOnNotStableTopologyTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsRebalancingOnNotStableTopologyTest.java
@@ -28,10 +28,10 @@ import 
org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.PartitionLossPolicy;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
 import org.apache.ignite.testframework.junits.multijvm.IgniteProcessProxy;
@@ -167,23 +167,13 @@ public class IgnitePdsRebalancingOnNotStableTopologyTest 
extends GridCommonAbstr
 
         cfg.setCacheConfiguration(ccfg);
 
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setCheckpointingFrequency(CHECKPOINT_FREQUENCY)
-        );
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(200 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY)
+            .setCheckpointFrequency(CHECKPOINT_FREQUENCY);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
-
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(200 * 1024 * 1024);
-        memPlcCfg.setMaxSize(200 * 1024 * 1024);
-
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         return cfg;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsTransactionsHangTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsTransactionsHangTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsTransactionsHangTest.java
index 7e8cfac..f3aee08 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsTransactionsHangTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsTransactionsHangTest.java
@@ -32,10 +32,9 @@ import org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.TransactionConfiguration;
 import 
org.apache.ignite.internal.processors.cache.transactions.IgniteTxManager;
 import org.apache.ignite.internal.util.typedef.internal.U;
@@ -123,26 +122,21 @@ public class IgnitePdsTransactionsHangTest extends 
GridCommonAbstractTest {
 
         cfg.setTransactionConfiguration(txCfg);
 
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalHistorySize(1)
-                .setCheckpointingFrequency(CHECKPOINT_FREQUENCY)
-        );
+        DataRegionConfiguration memPlcCfg = new DataRegionConfiguration();
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
+        memPlcCfg.setName("dfltDataRegion");
         memPlcCfg.setInitialSize(PAGE_CACHE_SIZE * 1024 * 1024);
         memPlcCfg.setMaxSize(PAGE_CACHE_SIZE * 1024 * 1024);
+        memPlcCfg.setPersistenceEnabled(true);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
-
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
+        DataStorageConfiguration memCfg = new DataStorageConfiguration();
 
+        memCfg.setDefaultDataRegionConfiguration(memPlcCfg);
+        memCfg.setWalHistorySize(1);
+        memCfg.setCheckpointFrequency(CHECKPOINT_FREQUENCY);
         memCfg.setPageSize(PAGE_SIZE * 1024);
 
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         return cfg;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsWholeClusterRestartTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsWholeClusterRestartTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsWholeClusterRestartTest.java
index df5bfdf..91380f0 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsWholeClusterRestartTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/IgnitePdsWholeClusterRestartTest.java
@@ -28,10 +28,9 @@ import org.apache.ignite.cache.CacheRebalanceMode;
 import org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.spi.checkpoint.noop.NoopCheckpointSpi;
@@ -56,18 +55,12 @@ public class IgnitePdsWholeClusterRestartTest extends 
GridCommonAbstractTest {
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(100 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(100 * 1024 * 1024);
-        memPlcCfg.setMaxSize(100 * 1024 * 1024);
-
-        dbCfg.setMemoryPolicies(memPlcCfg);
-        dbCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(dbCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration ccfg1 = new CacheConfiguration();
 
@@ -85,11 +78,6 @@ public class IgnitePdsWholeClusterRestartTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg1);
 
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalMode(WALMode.LOG_ONLY)
-        );
-
         cfg.setConsistentId(gridName);
 
         return cfg;

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/DefaultPageSizeBackwardsCompatibilityTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/DefaultPageSizeBackwardsCompatibilityTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/DefaultPageSizeBackwardsCompatibilityTest.java
index e577886..9e01f7b 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/DefaultPageSizeBackwardsCompatibilityTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/DefaultPageSizeBackwardsCompatibilityTest.java
@@ -23,10 +23,9 @@ import org.apache.ignite.cache.CacheAtomicityMode;
 import org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
 import org.apache.ignite.spi.discovery.tcp.ipfinder.TcpDiscoveryIpFinder;
@@ -58,20 +57,20 @@ public class DefaultPageSizeBackwardsCompatibilityTest 
extends GridCommonAbstrac
         TcpDiscoverySpi discoverySpi = (TcpDiscoverySpi)cfg.getDiscoverySpi();
         discoverySpi.setIpFinder(IP_FINDER);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration();
 
         if (set2kPageSize)
             memCfg.setPageSize(2048);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
+        DataRegionConfiguration memPlcCfg = new DataRegionConfiguration();
         memPlcCfg.setMaxSize(100 * 1000 * 1000);
+        memPlcCfg.setName("dfltDataRegion");
+        memPlcCfg.setPersistenceEnabled(true);
 
-        memPlcCfg.setName("dfltMemPlc");
+        memCfg.setDefaultDataRegionConfiguration(memPlcCfg);
+        memCfg.setCheckpointFrequency(3_000);
 
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration ccfg1 = new CacheConfiguration();
 
@@ -82,8 +81,6 @@ public class DefaultPageSizeBackwardsCompatibilityTest 
extends GridCommonAbstrac
 
         cfg.setCacheConfiguration(ccfg1);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration().setCheckpointingFrequency(3_000));
-
         cfg.setConsistentId(gridName);
 
         return cfg;

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheIntegrationTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheIntegrationTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheIntegrationTest.java
index d36894f..7d51b46 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheIntegrationTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCacheIntegrationTest.java
@@ -31,10 +31,9 @@ import org.apache.ignite.cache.query.SqlFieldsQuery;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.processors.cache.GridCacheAdapter;
@@ -65,25 +64,13 @@ public class IgnitePdsCacheIntegrationTest extends 
GridCommonAbstractTest {
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(100 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY)
+            .setConcurrencyLevel(Runtime.getRuntime().availableProcessors() * 
4);
 
-        dbCfg.setConcurrencyLevel(Runtime.getRuntime().availableProcessors() * 
4);
-
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(100 * 1024 * 1024);
-        memPlcCfg.setMaxSize(100 * 1024 * 1024);
-
-        dbCfg.setMemoryPolicies(memPlcCfg);
-        dbCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalMode(WALMode.LOG_ONLY)
-        );
-
-        cfg.setMemoryConfiguration(dbCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration ccfg = new CacheConfiguration(CACHE_NAME);
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCheckpointSimulationWithRealCpDisabledTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCheckpointSimulationWithRealCpDisabledTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCheckpointSimulationWithRealCpDisabledTest.java
index b4c32d8..5ae8969 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCheckpointSimulationWithRealCpDisabledTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsCheckpointSimulationWithRealCpDisabledTest.java
@@ -37,9 +37,9 @@ import java.nio.ByteOrder;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.cache.CacheRebalanceMode;
 import org.apache.ignite.configuration.CacheConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.IgniteInternalFuture;
@@ -106,15 +106,12 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
 
         cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
-
-        cfg.setMemoryConfiguration(dbCfg);
-
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setCheckpointingFrequency(500)
+        cfg.setDataStorageConfiguration(
+            new DataStorageConfiguration()
+                .setCheckpointFrequency(500)
                 .setWalMode(WALMode.LOG_ONLY)
                 .setAlwaysWriteFullPages(true)
+                .setDefaultDataRegionConfiguration(new 
DataRegionConfiguration().setPersistenceEnabled(true))
         );
 
         TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
@@ -163,7 +160,7 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
         // Otherwise we will violate page store integrity rules.
         ig.cache(cacheName).put(0, 0);
 
-        PageMemory mem = shared.database().memoryPolicy(null).pageMemory();
+        PageMemory mem = shared.database().dataRegion(null).pageMemory();
 
         IgniteBiTuple<Map<FullPageId, Integer>, WALPointer> res;
 
@@ -192,7 +189,7 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
 
         dbMgr.enableCheckpoints(false).get();
 
-        mem = shared.database().memoryPolicy(null).pageMemory();
+        mem = shared.database().dataRegion(null).pageMemory();
 
         verifyReads(res.get1(), mem, res.get2(), shared.wal());
     }
@@ -214,7 +211,7 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
         // Disable integrated checkpoint thread.
         dbMgr.enableCheckpoints(false);
 
-        PageMemory mem = shared.database().memoryPolicy(null).pageMemory();
+        PageMemory mem = shared.database().dataRegion(null).pageMemory();
 
         IgniteWriteAheadLogManager wal = shared.wal();
 
@@ -415,7 +412,7 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
         int cacheId = sharedCtx.cache().cache(cacheName).context().cacheId();
 
         GridCacheDatabaseSharedManager db = 
(GridCacheDatabaseSharedManager)sharedCtx.database();
-        PageMemory pageMem = 
sharedCtx.database().memoryPolicy(null).pageMemory();
+        PageMemory pageMem = 
sharedCtx.database().dataRegion(null).pageMemory();
         IgniteWriteAheadLogManager wal = sharedCtx.wal();
 
         db.enableCheckpoints(false).get();
@@ -520,7 +517,7 @@ public class 
IgnitePdsCheckpointSimulationWithRealCpDisabledTest extends GridCom
         // Disable integrated checkpoint thread.
         dbMgr.enableCheckpoints(false);
 
-        PageMemoryEx mem = (PageMemoryEx) 
dbMgr.memoryPolicy(null).pageMemory();
+        PageMemoryEx mem = (PageMemoryEx) dbMgr.dataRegion(null).pageMemory();
 
         ig.context().cache().context().database().checkpointReadLock();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsEvictionTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsEvictionTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsEvictionTest.java
index a9b0892..47a4b7b 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsEvictionTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsEvictionTest.java
@@ -24,10 +24,10 @@ import java.util.concurrent.Callable;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.configuration.CacheConfiguration;
 import org.apache.ignite.configuration.DataPageEvictionMode;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.IgniteInternalFuture;
 import org.apache.ignite.internal.pagemem.FullPageId;
@@ -69,9 +69,7 @@ public class IgnitePdsEvictionTest extends 
GridCommonAbstractTest {
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         final IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration());
-
-        cfg.setMemoryConfiguration(createDbConfig());
+        cfg.setDataStorageConfiguration(createDbConfig());
 
         cfg.setCacheConfiguration(new CacheConfiguration<>(cacheName));
 
@@ -81,19 +79,20 @@ public class IgnitePdsEvictionTest extends 
GridCommonAbstractTest {
     /**
      * @return DB config.
      */
-    private MemoryConfiguration createDbConfig() {
-        final MemoryConfiguration memCfg = new MemoryConfiguration();
+    private DataStorageConfiguration createDbConfig() {
+        final DataStorageConfiguration memCfg = new DataStorageConfiguration();
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
+        DataRegionConfiguration memPlcCfg = new DataRegionConfiguration();
         memPlcCfg.setInitialSize(MEMORY_LIMIT);
         memPlcCfg.setMaxSize(MEMORY_LIMIT);
         memPlcCfg.setPageEvictionMode(DataPageEvictionMode.RANDOM_LRU);
-        memPlcCfg.setName("dfltMemPlc");
+        memPlcCfg.setName("dfltDataRegion");
+        memPlcCfg.setPersistenceEnabled(true);
 
         memCfg.setPageSize(PAGE_SIZE);
         memCfg.setConcurrencyLevel(NUMBER_OF_SEGMENTS);
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
+        memCfg.setDefaultDataRegionConfiguration(memPlcCfg);
+        memCfg.setWalMode(WALMode.LOG_ONLY);
 
         return memCfg;
     }
@@ -290,7 +289,7 @@ public class IgnitePdsEvictionTest extends 
GridCommonAbstractTest {
 
         final IgniteCacheDatabaseSharedManager db = sharedCtx.database();
 
-        return db.memoryPolicy(null).pageMemory();
+        return db.dataRegion(null).pageMemory();
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsNoActualWalHistoryTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsNoActualWalHistoryTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsNoActualWalHistoryTest.java
index 1779fce..61f92c5 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsNoActualWalHistoryTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsNoActualWalHistoryTest.java
@@ -27,9 +27,9 @@ import 
org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import 
org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager;
@@ -59,19 +59,19 @@ public class IgnitePdsNoActualWalHistoryTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration dbCfg = new DataStorageConfiguration();
 
         dbCfg.setPageSize(4 * 1024);
 
-        cfg.setMemoryConfiguration(dbCfg);
+        cfg.setDataStorageConfiguration(dbCfg);
 
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalSegmentSize(4 * 1024 * 1024)
-                .setWalHistorySize(2)
-                .setWalSegments(10)
-                .setWalMode(WALMode.LOG_ONLY)
-        );
+        dbCfg.setWalSegmentSize(4 * 1024 * 1024)
+            .setWalHistorySize(2)
+            .setWalSegments(10)
+            .setWalMode(WALMode.LOG_ONLY)
+            .setDefaultDataRegionConfiguration(new DataRegionConfiguration()
+                .setMaxSize(100 * 1024 * 1024)
+                .setPersistenceEnabled(true));
 
         cfg.setMarshaller(null);
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
index 2a00768..4b55aed 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/file/IgnitePdsThreadInterruptionTest.java
@@ -17,22 +17,20 @@
 
 package org.apache.ignite.internal.processors.cache.persistence.db.file;
 
+import java.util.concurrent.atomic.AtomicReference;
 import org.apache.ignite.Ignite;
 import org.apache.ignite.IgniteCache;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import 
org.apache.ignite.internal.processors.cache.persistence.file.AsyncFileIOFactory;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
 import org.jsr166.ThreadLocalRandom8;
 
-import java.util.concurrent.atomic.AtomicReference;
-
 import static 
org.apache.ignite.internal.processors.cache.persistence.file.FilePageStoreManager.DFLT_STORE_DIR;
 
 /**
@@ -59,9 +57,7 @@ public class IgnitePdsThreadInterruptionTest extends 
GridCommonAbstractTest {
     @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
         final IgniteConfiguration cfg = super.getConfiguration(gridName);
 
-        cfg.setPersistentStoreConfiguration(storeConfiguration());
-
-        cfg.setMemoryConfiguration(memoryConfiguration());
+        cfg.setDataStorageConfiguration(memoryConfiguration());
 
         cfg.setCacheConfiguration(new CacheConfiguration<>(cacheName));
 
@@ -69,36 +65,19 @@ public class IgnitePdsThreadInterruptionTest extends 
GridCommonAbstractTest {
     }
 
     /**
-     * @return Store config.
-     */
-    private PersistentStoreConfiguration storeConfiguration() {
-        PersistentStoreConfiguration cfg = new PersistentStoreConfiguration();
-
-        cfg.setWalMode(WALMode.LOG_ONLY);
-
-        cfg.setWalFsyncDelayNanos(0);
-
-        cfg.setFileIOFactory(new AsyncFileIOFactory());
-
-        return cfg;
-    }
-
-    /**
      * @return Memory config.
      */
-    private MemoryConfiguration memoryConfiguration() {
-        final MemoryConfiguration memCfg = new MemoryConfiguration();
-
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-        // memPlcCfg.setPageEvictionMode(RANDOM_LRU); TODO Fix NPE on start.
-        memPlcCfg.setName("dfltMemPlc");
-
-        memCfg.setPageSize(PAGE_SIZE);
-        memCfg.setConcurrencyLevel(1);
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        return memCfg;
+    private DataStorageConfiguration memoryConfiguration() {
+        return new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(new DataRegionConfiguration()
+                .setName("dfltMemPlc")
+                .setPersistenceEnabled(true)
+                /*.setPageEvictionMode(DataPageEvictionMode.RANDOM_LRU) TODO: 
fix NPE on start */)
+            .setPageSize(PAGE_SIZE)
+            .setConcurrencyLevel(1)
+            .setWalMode(WALMode.LOG_ONLY)
+            .setWalFsyncDelayNanos(0)
+            .setFileIOFactory(new AsyncFileIOFactory());
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
index fe7e4df..1f322de 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/filename/IgniteUidAsConsistentIdMigrationTest.java
@@ -27,10 +27,9 @@ import java.util.regex.Pattern;
 import org.apache.ignite.Ignite;
 import org.apache.ignite.IgniteCache;
 import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import 
org.apache.ignite.internal.processors.cache.persistence.filename.PdsConsistentIdProcessor;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.testframework.GridStringLogger;
@@ -129,7 +128,7 @@ public class IgniteUidAsConsistentIdMigrationTest extends 
GridCommonAbstractTest
         if (configuredConsistentId != null)
             cfg.setConsistentId(configuredConsistentId);
 
-        final PersistentStoreConfiguration psCfg = new 
PersistentStoreConfiguration();
+        final DataStorageConfiguration dsCfg = new DataStorageConfiguration();
 
         if (placeStorageInTemp) {
             final File tempDir = new 
File(System.getProperty("java.io.tmpdir"));
@@ -138,19 +137,16 @@ public class IgniteUidAsConsistentIdMigrationTest extends 
GridCommonAbstractTest
             pstWalStoreCustomPath = new File(tempDir, "WalStore");
             pstWalArchCustomPath = new File(tempDir, "WalArchive");
 
-            psCfg.setPersistentStorePath(pstStoreCustomPath.getAbsolutePath());
-            psCfg.setWalStorePath(pstWalStoreCustomPath.getAbsolutePath());
-            psCfg.setWalArchivePath(pstWalArchCustomPath.getAbsolutePath());
+            dsCfg.setStoragePath(pstStoreCustomPath.getAbsolutePath());
+            dsCfg.setWalPath(pstWalStoreCustomPath.getAbsolutePath());
+            dsCfg.setWalArchivePath(pstWalArchCustomPath.getAbsolutePath());
         }
 
-        cfg.setPersistentStoreConfiguration(psCfg);
+        dsCfg.setDefaultDataRegionConfiguration(new DataRegionConfiguration()
+            .setMaxSize(32 * 1024 * 1024)
+            .setPersistenceEnabled(true));
 
-        final MemoryConfiguration memCfg = new MemoryConfiguration();
-        final MemoryPolicyConfiguration memPolCfg = new 
MemoryPolicyConfiguration();
-
-        memPolCfg.setMaxSize(32 * 1024 * 1024); // we don't need much memory 
for this test
-        memCfg.setMemoryPolicies(memPolCfg);
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(dsCfg);
 
         if (strLog != null)
             cfg.setGridLogger(strLog);
@@ -665,8 +661,8 @@ public class IgniteUidAsConsistentIdMigrationTest extends 
GridCommonAbstractTest
      */
     private void assertPdsDirsDefaultExist(String subDirName) throws 
IgniteCheckedException {
         assertDirectoryExist("binary_meta", subDirName);
-        assertDirectoryExist(PersistentStoreConfiguration.DFLT_WAL_STORE_PATH, 
subDirName);
-        
assertDirectoryExist(PersistentStoreConfiguration.DFLT_WAL_ARCHIVE_PATH, 
subDirName);
+        assertDirectoryExist(DataStorageConfiguration.DFLT_WAL_PATH, 
subDirName);
+        assertDirectoryExist(DataStorageConfiguration.DFLT_WAL_ARCHIVE_PATH, 
subDirName);
         assertDirectoryExist(PdsConsistentIdProcessor.DB_DEFAULT_FOLDER, 
subDirName);
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgnitePdsWalTlbTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgnitePdsWalTlbTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgnitePdsWalTlbTest.java
index a06d587..5700eb3 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgnitePdsWalTlbTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgnitePdsWalTlbTest.java
@@ -21,9 +21,9 @@ import javax.cache.CacheException;
 import org.apache.ignite.IgniteDataStreamer;
 import org.apache.ignite.configuration.CacheConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.util.typedef.internal.U;
 import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
@@ -52,24 +52,14 @@ public class IgnitePdsWalTlbTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(100 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY)
+            .setCheckpointPageBufferSize(DFLT_CHECKPOINTING_PAGE_BUFFER_SIZE + 
1)
+            .setWalThreadLocalBufferSize(640000000);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(100 * 1024 * 1024);
-        memPlcCfg.setMaxSize(100 * 1024 * 1024);
-
-        memCfg.setMemoryPolicies(memPlcCfg);
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(memCfg);
-
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                
.setCheckpointingPageBufferSize(DFLT_CHECKPOINTING_PAGE_BUFFER_SIZE + 1)
-                .setTlbSize(640000000)
-        );
+        cfg.setDataStorageConfiguration(memCfg);
 
         TcpDiscoverySpi discoSpi = new TcpDiscoverySpi();
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalFlushFailoverTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalFlushFailoverTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalFlushFailoverTest.java
index 12ec6ef..af8f679 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalFlushFailoverTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalFlushFailoverTest.java
@@ -24,10 +24,9 @@ import org.apache.ignite.IgniteCache;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.cache.CacheAtomicityMode;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.GridKernalState;
 import org.apache.ignite.internal.IgniteEx;
@@ -83,23 +82,15 @@ public class IgniteWalFlushFailoverTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(cacheCfg);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration()
-                .setName("dfltMemPlc")
-                .setInitialSize(2 * 1024L * 1024L * 1024L);
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(2048L * 1024 * 
1024).setPersistenceEnabled(true))
+            .setFileIOFactory(new FailingFileIOFactory())
+            .setWalMode(WALMode.BACKGROUND)
+            // Setting WAL Segment size to high values forces flushing by 
timeout.
+            .setWalSegmentSize(flushByTimeout ? 500_000 : 50_000);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration()
-                .setMemoryPolicies(memPlcCfg)
-                .setDefaultMemoryPolicyName(memPlcCfg.getName());
-
-        cfg.setMemoryConfiguration(memCfg);
-
-        PersistentStoreConfiguration storeCfg = new 
PersistentStoreConfiguration()
-                .setFileIOFactory(new FailingFileIOFactory())
-                .setWalMode(WALMode.BACKGROUND)
-                // Setting WAL Segment size to high values forces flushing by 
timeout.
-                .setWalSegmentSize(flushByTimeout ? 500_000 : 50_000);
-
-        cfg.setPersistentStoreConfiguration(storeCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         return cfg;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalHistoryReservationsTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalHistoryReservationsTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalHistoryReservationsTest.java
index 5d5458e..35d85d1 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalHistoryReservationsTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalHistoryReservationsTest.java
@@ -27,10 +27,10 @@ import org.apache.ignite.cache.CacheAtomicityMode;
 import org.apache.ignite.cache.CacheWriteSynchronizationMode;
 import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import 
org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtLocalPartition;
 import 
org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager;
@@ -57,20 +57,12 @@ public class IgniteWalHistoryReservationsTest extends 
GridCommonAbstractTest {
 
         cfg.setClientMode(client);
 
-        MemoryConfiguration memCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(200 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY);
 
-        long memSize = 200L * 1024L * 1024L;
-
-        memCfg.setMemoryPolicies(
-            new MemoryPolicyConfiguration()
-                .setInitialSize(memSize)
-                .setMaxSize(memSize)
-                .setName("dfltMemPlc")
-        );
-
-        memCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(memCfg);
+        cfg.setDataStorageConfiguration(memCfg);
 
         CacheConfiguration ccfg1 = new CacheConfiguration();
 
@@ -82,8 +74,6 @@ public class IgniteWalHistoryReservationsTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg1);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration());
-
         return cfg;
     }
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryPPCTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryPPCTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryPPCTest.java
new file mode 100644
index 0000000..f3c2c99
--- /dev/null
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryPPCTest.java
@@ -0,0 +1,321 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.cache.persistence.db.wal;
+
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.cache.CacheAtomicityMode;
+import org.apache.ignite.cache.CacheRebalanceMode;
+import org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
+import org.apache.ignite.cache.query.annotations.QuerySqlField;
+import org.apache.ignite.configuration.BinaryConfiguration;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.configuration.WALMode;
+import org.apache.ignite.internal.IgniteEx;
+import org.apache.ignite.internal.util.typedef.internal.S;
+import org.apache.ignite.internal.util.typedef.internal.U;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+
+/**
+ *
+ */
+public class IgniteWalRecoveryPPCTest extends GridCommonAbstractTest {
+    /** */
+    private boolean fork;
+
+    /** */
+    public static final String CACHE_NAME_1 = "cache_1";
+
+    /** */
+    public static final String CACHE_NAME_2 = "cache_2";
+
+    /** */
+    public static final String MEM_PLC_NO_PDS = "mem_plc_2";
+
+    /** */
+    private int walSegmentSize;
+
+    /** Logger only. */
+    private boolean logOnly;
+
+    /** {@inheritDoc} */
+    @Override protected boolean isMultiJvm() {
+        return fork;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected IgniteConfiguration getConfiguration(String gridName) 
throws Exception {
+        IgniteConfiguration cfg = super.getConfiguration(gridName);
+
+        CacheConfiguration<Integer, IndexedObject> ccfg = new 
CacheConfiguration<>(CACHE_NAME_1);
+
+        ccfg.setAtomicityMode(CacheAtomicityMode.ATOMIC);
+        ccfg.setRebalanceMode(CacheRebalanceMode.SYNC);
+        ccfg.setAffinity(new RendezvousAffinityFunction(false, 32));
+
+        cfg.setCacheConfiguration(ccfg);
+
+        CacheConfiguration<Integer, IndexedObject> ccfg2 = new 
CacheConfiguration<>(CACHE_NAME_2);
+
+        ccfg2.setAtomicityMode(CacheAtomicityMode.ATOMIC);
+        ccfg2.setRebalanceMode(CacheRebalanceMode.SYNC);
+        ccfg2.setAffinity(new RendezvousAffinityFunction(false, 32));
+        ccfg2.setDataRegionName(MEM_PLC_NO_PDS);
+
+        cfg.setCacheConfiguration(ccfg, ccfg2);
+
+        DataStorageConfiguration dbCfg = new DataStorageConfiguration();
+        dbCfg.setPageSize(4 * 1024);
+
+        DataRegionConfiguration memPlcCfg = new DataRegionConfiguration();
+        memPlcCfg.setInitialSize(1024 * 1024 * 1024);
+        memPlcCfg.setMaxSize(1024 * 1024 * 1024);
+        memPlcCfg.setPersistenceEnabled(true);
+
+        dbCfg.setDefaultDataRegionConfiguration(memPlcCfg);
+
+        DataRegionConfiguration memPlcCfg2 = new DataRegionConfiguration();
+        memPlcCfg2.setName(MEM_PLC_NO_PDS);
+        memPlcCfg2.setInitialSize(1024 * 1024 * 1024);
+        memPlcCfg2.setMaxSize(1024 * 1024 * 1024);
+        memPlcCfg2.setPersistenceEnabled(false);
+
+        dbCfg.setDataRegionConfigurations(memPlcCfg2);
+
+        dbCfg.setWalRecordIteratorBufferSize(1024 * 1024);
+
+        dbCfg.setWalHistorySize(2);
+
+        dbCfg.setWalMode(WALMode.LOG_ONLY);
+
+        if (walSegmentSize != 0)
+            dbCfg.setWalSegmentSize(walSegmentSize);
+
+        cfg.setDataStorageConfiguration(dbCfg);
+
+        cfg.setMarshaller(null);
+
+        BinaryConfiguration binCfg = new BinaryConfiguration();
+
+        binCfg.setCompactFooter(false);
+
+        cfg.setBinaryConfiguration(binCfg);
+
+        return cfg;
+    }
+
+    /** {@inheritDoc} */
+    @Override protected void beforeTest() throws Exception {
+        stopAllGrids();
+
+        deleteRecursively(U.resolveWorkDirectory(U.defaultWorkDirectory(), 
"db", false));
+    }
+
+    /** {@inheritDoc} */
+    @Override protected void afterTest() throws Exception {
+        stopAllGrids();
+
+        deleteRecursively(U.resolveWorkDirectory(U.defaultWorkDirectory(), 
"db", false));
+    }
+
+    /**
+     * @throws Exception if failed.
+     */
+    public void testWalSimple() throws Exception {
+        try {
+            IgniteEx ignite = startGrid(1);
+
+            ignite.active(true);
+
+            IgniteCache<Object, Object> cache1 = ignite.cache(CACHE_NAME_1);
+            IgniteCache<Object, Object> cache2 = ignite.cache(CACHE_NAME_2);
+
+            info(" --> step1");
+
+            for (int i = 0; i < 10_000; i += 2) {
+                cache1.put(i, new IndexedObject(i));
+                cache2.put(i, new IndexedObject(i + 1));
+            }
+
+            info(" --> step2");
+
+            for (int i = 0; i < 10_000; i += 3) {
+                cache1.put(i, new IndexedObject(i * 2));
+                cache2.put(i, new IndexedObject(i * 2 + 1));
+            }
+
+            info(" --> step3");
+
+            for (int i = 0; i < 10_000; i += 7) {
+                cache1.put(i, new IndexedObject(i * 3));
+                cache2.put(i, new IndexedObject(i * 3 + 1));
+            }
+
+            info(" --> check1");
+
+            // Check.
+            for (int i = 0; i < 10_000; i++) {
+                IndexedObject o;
+                IndexedObject o1;
+
+                if (i % 7 == 0) {
+                    o = new IndexedObject(i * 3);
+                    o1 = new IndexedObject(i * 3 + 1);
+                }
+                else if (i % 3 == 0) {
+                    o = new IndexedObject(i * 2);
+                    o1 = new IndexedObject(i * 2 + 1);
+                }
+                else if (i % 2 == 0) {
+                    o = new IndexedObject(i);
+                    o1 = new IndexedObject(i + 1);
+                }
+                else {
+                    o = null;
+                    o1 = null;
+                }
+
+                assertEquals(o, cache1.get(i));
+                assertEquals(o1, cache2.get(i));
+            }
+
+            stopGrid(1);
+
+            ignite = startGrid(1);
+
+            ignite.active(true);
+
+            cache1 = ignite.cache(CACHE_NAME_1);
+            cache2 = ignite.cache(CACHE_NAME_2);
+
+            info(" --> check2");
+
+            // Check.
+            for (int i = 0; i < 10_000; i++) {
+                IndexedObject o;
+
+                if (i % 7 == 0)
+                    o = new IndexedObject(i * 3);
+                else if (i % 3 == 0)
+                    o = new IndexedObject(i * 2);
+                else if (i % 2 == 0)
+                    o = new IndexedObject(i);
+                else
+                    o = null;
+
+                assertEquals(o, cache1.get(i));
+                assertEquals(null, cache2.get(i));
+            }
+
+            info(" --> ok");
+        }
+        finally {
+            stopAllGrids();
+        }
+    }
+
+    /**
+     *
+     */
+    public void testDynamicallyStartedNonPersistentCache() throws Exception {
+        try {
+            IgniteEx ignite = startGrid(1);
+
+            ignite.active(true);
+
+            IgniteCache<Integer, Object> dynamicPersistent = 
ignite.getOrCreateCache(
+                new CacheConfiguration<Integer, Object>()
+                    .setAtomicityMode(CacheAtomicityMode.ATOMIC)
+                    .setRebalanceMode(CacheRebalanceMode.SYNC)
+                    .setName("dynamicPersistent")
+                    .setAffinity(new RendezvousAffinityFunction(false, 32)));
+
+            IgniteCache<Integer, Object> dynamicVolatile = 
ignite.getOrCreateCache(
+                new CacheConfiguration<Integer, Object>()
+                    .setAtomicityMode(CacheAtomicityMode.ATOMIC)
+                    .setRebalanceMode(CacheRebalanceMode.SYNC)
+                    .setDataRegionName(MEM_PLC_NO_PDS)
+                    .setName("dynamicVolatile")
+                    .setAffinity(new RendezvousAffinityFunction(false, 32)));
+
+            for (int i = 0; i < 10_000; i++) {
+                dynamicPersistent.put(i, new IndexedObject(i));
+                dynamicVolatile.put(i, new IndexedObject(i + 1));
+            }
+
+            stopGrid(1);
+
+            ignite = startGrid(1);
+
+            ignite.active(true);
+
+            dynamicPersistent = ignite.cache("dynamicPersistent");
+            dynamicVolatile = ignite.cache("dynamicVolatile");
+
+            for (int i = 0; i < 10_000; i++)
+                assertEquals(new IndexedObject(i), dynamicPersistent.get(i));
+
+            assertNull(dynamicVolatile);
+
+        }
+        finally {
+            stopAllGrids();
+        }
+    }
+
+    /**
+     *
+     */
+    private static class IndexedObject {
+        /** */
+        @QuerySqlField(index = true)
+        private int iVal;
+
+        /**
+         * @param iVal Integer value.
+         */
+        private IndexedObject(int iVal) {
+            this.iVal = iVal;
+        }
+
+        /** {@inheritDoc} */
+        @Override public boolean equals(Object o) {
+            if (this == o)
+                return true;
+
+            if (!(o instanceof IndexedObject))
+                return false;
+
+            IndexedObject that = (IndexedObject)o;
+
+            return iVal == that.iVal;
+        }
+
+        /** {@inheritDoc} */
+        @Override public int hashCode() {
+            return iVal;
+        }
+
+        /** {@inheritDoc} */
+        @Override public String toString() {
+            return S.toString(IndexedObject.class, this);
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoverySeveralRestartsTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoverySeveralRestartsTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoverySeveralRestartsTest.java
index 9497dc6..699fe81 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoverySeveralRestartsTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoverySeveralRestartsTest.java
@@ -28,10 +28,9 @@ import 
org.apache.ignite.cache.affinity.rendezvous.RendezvousAffinityFunction;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.util.typedef.internal.S;
@@ -80,25 +79,13 @@ public class IgniteWalRecoverySeveralRestartsTest extends 
GridCommonAbstractTest
 
         cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration memCfg = new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(
+                new DataRegionConfiguration().setMaxSize(500 * 1024 * 
1024).setPersistenceEnabled(true))
+            .setWalMode(WALMode.LOG_ONLY)
+            .setPageSize(PAGE_SIZE);
 
-        dbCfg.setPageSize(PAGE_SIZE);
-
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
-
-        memPlcCfg.setName("dfltMemPlc");
-        memPlcCfg.setInitialSize(500 * 1024 * 1024);
-        memPlcCfg.setMaxSize(500 * 1024 * 1024);
-
-        dbCfg.setMemoryPolicies(memPlcCfg);
-        dbCfg.setDefaultMemoryPolicyName("dfltMemPlc");
-
-        cfg.setMemoryConfiguration(dbCfg);
-
-        cfg.setPersistentStoreConfiguration(
-            new PersistentStoreConfiguration()
-                .setWalMode(WALMode.LOG_ONLY)
-        );
+        cfg.setDataStorageConfiguration(memCfg);
 
         cfg.setMarshaller(null);
 

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
index bf8cd85..b357877 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalRecoveryTest.java
@@ -48,10 +48,9 @@ import 
org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.cluster.ClusterNode;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.MemoryPolicyConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.configuration.WALMode;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.IgniteInternalFuture;
@@ -136,34 +135,30 @@ public class IgniteWalRecoveryTest extends 
GridCommonAbstractTest {
 
         cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration dbCfg = new DataStorageConfiguration();
 
         dbCfg.setPageSize(4 * 1024);
 
-        MemoryPolicyConfiguration memPlcCfg = new MemoryPolicyConfiguration();
+        DataRegionConfiguration memPlcCfg = new DataRegionConfiguration();
 
-        memPlcCfg.setName("dfltMemPlc");
+        memPlcCfg.setName("dfltDataRegion");
         memPlcCfg.setInitialSize(1024 * 1024 * 1024);
         memPlcCfg.setMaxSize(1024 * 1024 * 1024);
+        memPlcCfg.setPersistenceEnabled(true);
 
-        dbCfg.setMemoryPolicies(memPlcCfg);
-        dbCfg.setDefaultMemoryPolicyName("dfltMemPlc");
+        dbCfg.setDefaultDataRegionConfiguration(memPlcCfg);
 
-        cfg.setMemoryConfiguration(dbCfg);
+        dbCfg.setWalRecordIteratorBufferSize(1024 * 1024);
 
-        PersistentStoreConfiguration pCfg = new PersistentStoreConfiguration();
-
-        pCfg.setWalRecordIteratorBufferSize(1024 * 1024);
-
-        pCfg.setWalHistorySize(2);
+        dbCfg.setWalHistorySize(2);
 
         if (logOnly)
-            pCfg.setWalMode(WALMode.LOG_ONLY);
+            dbCfg.setWalMode(WALMode.LOG_ONLY);
 
         if (walSegmentSize != 0)
-            pCfg.setWalSegmentSize(walSegmentSize);
+            dbCfg.setWalSegmentSize(walSegmentSize);
 
-        cfg.setPersistentStoreConfiguration(pCfg);
+        cfg.setDataStorageConfiguration(dbCfg);
 
         cfg.setMarshaller(null);
 
@@ -976,7 +971,7 @@ public class IgniteWalRecoveryTest extends 
GridCommonAbstractTest {
 
                         delta.applyDelta(sharedCtx
                                 .database()
-                                .memoryPolicy(null)
+                                .dataRegion(null)
                                 .pageMemory(),
 
                                 ((DirectBuffer)buf1).address());
@@ -990,7 +985,7 @@ public class IgniteWalRecoveryTest extends 
GridCommonAbstractTest {
 
             info("Done apply...");
 
-            PageMemoryEx pageMem = 
(PageMemoryEx)db.memoryPolicy(null).pageMemory();
+            PageMemoryEx pageMem = 
(PageMemoryEx)db.dataRegion(null).pageMemory();
 
             for (Map.Entry<FullPageId, byte[]> entry : rolledPages.entrySet()) 
{
                 FullPageId fullId = entry.getKey();

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalSerializerVersionTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalSerializerVersionTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalSerializerVersionTest.java
index f31d0f9..dcda829 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalSerializerVersionTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/IgniteWalSerializerVersionTest.java
@@ -18,8 +18,9 @@
 package org.apache.ignite.internal.processors.cache.persistence.db.wal;
 
 import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.configuration.DataRegionConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.pagemem.wal.IgniteWriteAheadLogManager;
 import 
org.apache.ignite.internal.processors.cache.persistence.wal.RecordSerializer;
@@ -48,7 +49,10 @@ public class IgniteWalSerializerVersionTest extends 
GridCommonAbstractTest {
 
         ((TcpDiscoverySpi)cfg.getDiscoverySpi()).setIpFinder(IP_FINDER);
 
-        cfg.setPersistentStoreConfiguration(new 
PersistentStoreConfiguration());
+        cfg.setDataStorageConfiguration(new DataStorageConfiguration()
+            .setDefaultDataRegionConfiguration(new DataRegionConfiguration()
+                .setPersistenceEnabled(true)
+                .setMaxSize(100 * 1024 * 1024)));
 
         return cfg;
     }

http://git-wip-us.apache.org/repos/asf/ignite/blob/74567763/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalRecoveryTxLogicalRecordsTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalRecoveryTxLogicalRecordsTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalRecoveryTxLogicalRecordsTest.java
index f5d46e2..10b6110 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalRecoveryTxLogicalRecordsTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalRecoveryTxLogicalRecordsTest.java
@@ -38,9 +38,9 @@ import org.apache.ignite.cache.query.SqlFieldsQuery;
 import org.apache.ignite.cache.query.annotations.QuerySqlField;
 import org.apache.ignite.configuration.BinaryConfiguration;
 import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
 import org.apache.ignite.configuration.IgniteConfiguration;
-import org.apache.ignite.configuration.MemoryConfiguration;
-import org.apache.ignite.configuration.PersistentStoreConfiguration;
 import org.apache.ignite.internal.IgniteEx;
 import org.apache.ignite.internal.pagemem.PageIdAllocator;
 import org.apache.ignite.internal.pagemem.store.PageStore;
@@ -107,20 +107,20 @@ public class WalRecoveryTxLogicalRecordsTest extends 
GridCommonAbstractTest {
         else
             cfg.setCacheConfiguration(ccfg);
 
-        MemoryConfiguration dbCfg = new MemoryConfiguration();
+        DataStorageConfiguration dbCfg = new DataStorageConfiguration();
 
         dbCfg.setPageSize(pageSize);
 
-        cfg.setMemoryConfiguration(dbCfg);
+        dbCfg.setWalHistorySize(WAL_HIST_SIZE);
 
-        PersistentStoreConfiguration pCfg = new PersistentStoreConfiguration();
-
-        pCfg.setWalHistorySize(WAL_HIST_SIZE);
+        dbCfg.setDefaultDataRegionConfiguration(new DataRegionConfiguration()
+            .setMaxSize(100 * 1024 * 1024)
+            .setPersistenceEnabled(true));
 
         if (checkpointFreq != null)
-            pCfg.setCheckpointingFrequency(checkpointFreq);
+            dbCfg.setCheckpointFrequency(checkpointFreq);
 
-        cfg.setPersistentStoreConfiguration(pCfg);
+        cfg.setDataStorageConfiguration(dbCfg);
 
         cfg.setMarshaller(null);
 

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