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new bc4252ee add spacetl delete (#867)
bc4252ee is described below
commit bc4252ee734e2ed30ed3ed61f469d77c0ce1a0af
Author: leto-b <[email protected]>
AuthorDate: Thu Dec 4 17:15:12 2025 +0800
add spacetl delete (#867)
---
src/.vuepress/sidebar/V1.3.x/en.ts | 1 +
src/.vuepress/sidebar/V1.3.x/zh.ts | 1 +
src/.vuepress/sidebar/V2.0.x/en-Table.ts | 1 +
src/.vuepress/sidebar/V2.0.x/en-Tree.ts | 1 +
src/.vuepress/sidebar/V2.0.x/zh-Table.ts | 1 +
src/.vuepress/sidebar/V2.0.x/zh-Tree.ts | 1 +
src/.vuepress/sidebar_timecho/V1.3.x/en.ts | 1 +
src/.vuepress/sidebar_timecho/V1.3.x/zh.ts | 1 +
src/.vuepress/sidebar_timecho/V2.0.x/en-Table.ts | 1 +
src/.vuepress/sidebar_timecho/V2.0.x/en-Tree.ts | 1 +
src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts | 1 +
src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts | 1 +
.../Master/Table/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../Master/Tree/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../V1.3.x/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../dev-1.3/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../latest-Table/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../latest/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../Master/Table/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../Master/Tree/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../V1.3.x/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../dev-1.3/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../latest-Table/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
.../latest/Basic-Concept/SpaceTL-Delete.md | 89 ++++++++++++++++++++++
24 files changed, 1080 insertions(+)
diff --git a/src/.vuepress/sidebar/V1.3.x/en.ts
b/src/.vuepress/sidebar/V1.3.x/en.ts
index 5ef54a08..818c65b0 100644
--- a/src/.vuepress/sidebar/V1.3.x/en.ts
+++ b/src/.vuepress/sidebar/V1.3.x/en.ts
@@ -97,6 +97,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar/V1.3.x/zh.ts
b/src/.vuepress/sidebar/V1.3.x/zh.ts
index 024e2c32..e62f674e 100644
--- a/src/.vuepress/sidebar/V1.3.x/zh.ts
+++ b/src/.vuepress/sidebar/V1.3.x/zh.ts
@@ -85,6 +85,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar/V2.0.x/en-Table.ts
b/src/.vuepress/sidebar/V2.0.x/en-Table.ts
index 14903f8f..566f0972 100644
--- a/src/.vuepress/sidebar/V2.0.x/en-Table.ts
+++ b/src/.vuepress/sidebar/V2.0.x/en-Table.ts
@@ -84,6 +84,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete-Data' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar/V2.0.x/en-Tree.ts
b/src/.vuepress/sidebar/V2.0.x/en-Tree.ts
index 42df7c02..8e417c53 100644
--- a/src/.vuepress/sidebar/V2.0.x/en-Tree.ts
+++ b/src/.vuepress/sidebar/V2.0.x/en-Tree.ts
@@ -89,6 +89,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar/V2.0.x/zh-Table.ts
b/src/.vuepress/sidebar/V2.0.x/zh-Table.ts
index a681d471..70a6ebef 100644
--- a/src/.vuepress/sidebar/V2.0.x/zh-Table.ts
+++ b/src/.vuepress/sidebar/V2.0.x/zh-Table.ts
@@ -77,6 +77,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete-Data' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar/V2.0.x/zh-Tree.ts
b/src/.vuepress/sidebar/V2.0.x/zh-Tree.ts
index 589b77c9..2333d0da 100644
--- a/src/.vuepress/sidebar/V2.0.x/zh-Tree.ts
+++ b/src/.vuepress/sidebar/V2.0.x/zh-Tree.ts
@@ -77,6 +77,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V1.3.x/en.ts
b/src/.vuepress/sidebar_timecho/V1.3.x/en.ts
index 1edccc98..95e61bb7 100644
--- a/src/.vuepress/sidebar_timecho/V1.3.x/en.ts
+++ b/src/.vuepress/sidebar_timecho/V1.3.x/en.ts
@@ -106,6 +106,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V1.3.x/zh.ts
b/src/.vuepress/sidebar_timecho/V1.3.x/zh.ts
index ae5b24f9..95030af4 100644
--- a/src/.vuepress/sidebar_timecho/V1.3.x/zh.ts
+++ b/src/.vuepress/sidebar_timecho/V1.3.x/zh.ts
@@ -88,6 +88,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V2.0.x/en-Table.ts
b/src/.vuepress/sidebar_timecho/V2.0.x/en-Table.ts
index e62ec261..9c8e854c 100644
--- a/src/.vuepress/sidebar_timecho/V2.0.x/en-Table.ts
+++ b/src/.vuepress/sidebar_timecho/V2.0.x/en-Table.ts
@@ -88,6 +88,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete-Data' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V2.0.x/en-Tree.ts
b/src/.vuepress/sidebar_timecho/V2.0.x/en-Tree.ts
index 2548b316..ecbfffc1 100644
--- a/src/.vuepress/sidebar_timecho/V2.0.x/en-Tree.ts
+++ b/src/.vuepress/sidebar_timecho/V2.0.x/en-Tree.ts
@@ -98,6 +98,7 @@ export const enSidebar = {
children: [
{ text: 'Delete Data', link: 'Delete-Data' },
{ text: 'TTL Delete Data', link: 'TTL-Delete' },
+ { text: 'SpaceTL Delete Data', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts
b/src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts
index 71605272..955d52af 100644
--- a/src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts
+++ b/src/.vuepress/sidebar_timecho/V2.0.x/zh-Table.ts
@@ -79,6 +79,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete-Data' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts
b/src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts
index 121ee1ad..354fb06e 100644
--- a/src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts
+++ b/src/.vuepress/sidebar_timecho/V2.0.x/zh-Tree.ts
@@ -80,6 +80,7 @@ export const zhSidebar = {
children: [
{ text: '数据删除', link: 'Delete-Data' },
{ text: '数据保留时间', link: 'TTL-Delete' },
+ { text: 'SpaceTL 删除', link: 'SpaceTL-Delete' },
],
},
],
diff --git a/src/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..1a16a9c8
--- /dev/null
+++ b/src/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB supports configuring the SpaceTL deletion policy through parameters:
when the storage space of the last-level storage tier (object storage space is
considered unlimited) is insufficient, users can choose whether to trigger the
SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..1a16a9c8
--- /dev/null
+++ b/src/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB supports configuring the SpaceTL deletion policy through parameters:
when the storage space of the last-level storage tier (object storage space is
considered unlimited) is insufficient, users can choose whether to trigger the
SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..c3e9a8ed
--- /dev/null
+++ b/src/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB(V1.3.2+) supports configuring the SpaceTL deletion policy through
parameters: when the storage space of the last-level storage tier (object
storage space is considered unlimited) is insufficient, users can choose
whether to trigger the SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..c3e9a8ed
--- /dev/null
+++ b/src/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB(V1.3.2+) supports configuring the SpaceTL deletion policy through
parameters: when the storage space of the last-level storage tier (object
storage space is considered unlimited) is insufficient, users can choose
whether to trigger the SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..1a16a9c8
--- /dev/null
+++ b/src/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB supports configuring the SpaceTL deletion policy through parameters:
when the storage space of the last-level storage tier (object storage space is
considered unlimited) is insufficient, users can choose whether to trigger the
SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
b/src/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..1a16a9c8
--- /dev/null
+++ b/src/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL Delete
+
+## 1. Overview
+
+IoTDB supports configuring the SpaceTL deletion policy through parameters:
when the storage space of the last-level storage tier (object storage space is
considered unlimited) is insufficient, users can choose whether to trigger the
SpaceTL deletion mechanism to free up space.
+
+Note: This mechanism only deletes files in the last storage tier.
+
+## 2. Parameter Introduction
+
+| Parameter Name | Description
| Default Value | Effective Mode |
+| --------------------------- |
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| --------------- | ---------------- |
+| `dn_tier_full_policy` | Behavior policy when the storage space of the
last-level storage tier is insufficient. Configurable options:1. NULL: Take no
action.2. DELETE: Enable SpaceTL data deletion. | NULL | Hot Reload
|
+
+Parameter Explanation:
+
+* If the last-level storage tier includes object storage, SpaceTL will not be
triggered.
+* This parameter works in conjunction with the
`dn_default_space_usage_thresholds`parameter. SpaceTL is triggered when the
available space of the last-level storage tier falls below the
`space_usage_thresholds`. By default, deletion begins when disk space usage
reaches 85% and continues until usage drops below 85%.
+
+## 3. Usage Example
+
+In a three-tier storage setup, when the storage space of the last tier reaches
85%, the SpaceTL deletion mechanism is triggered to start deleting files.
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+In this example, three tiers of storage are configured as follows:
+
+| Tier Level | Storage Directories | Data Retention Time
| Disk Storage Space Threshold
|
+| ------------ | ------------------------------- |
----------------------------------------------------- |
-----------------------------------------------------------------------------------------
|
+| Tier 1 | `/data1/data` | Retained for 1 day; exceeded data
moves to Tier 2 | Data moves to Tier 2 when disk usage reaches 75%
|
+| Tier 2 | `/data2/data,/data3/data` | Retained for 10 days; exceeded data
moves to Tier 3 | Data moves to Tier 3 when disk usage reaches 80%
|
+| Tier 3 | `/data4/data` | No expiration time; data is stored
indefinitely | Deletes some files when disk usage reaches 85% (due
to`dn_tier_full_policy=DELETE`) |
diff --git a/src/zh/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..62b7a565
--- /dev/null
+++ b/src/zh/UserGuide/Master/Table/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发 SpaceTL
删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
diff --git a/src/zh/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..62b7a565
--- /dev/null
+++ b/src/zh/UserGuide/Master/Tree/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发 SpaceTL
删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
diff --git a/src/zh/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..2bcab3f3
--- /dev/null
+++ b/src/zh/UserGuide/V1.3.x/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB(V1.3.2+) 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发
SpaceTL 删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
diff --git a/src/zh/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..2bcab3f3
--- /dev/null
+++ b/src/zh/UserGuide/dev-1.3/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB(V1.3.2+) 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发
SpaceTL 删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
diff --git a/src/zh/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..62b7a565
--- /dev/null
+++ b/src/zh/UserGuide/latest-Table/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发 SpaceTL
删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
diff --git a/src/zh/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
b/src/zh/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
new file mode 100644
index 00000000..62b7a565
--- /dev/null
+++ b/src/zh/UserGuide/latest/Basic-Concept/SpaceTL-Delete.md
@@ -0,0 +1,89 @@
+<!--
+
+ 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.
+
+-->
+
+# SpaceTL 删除
+
+## 1. 概述
+
+IoTDB 支持通过参数配置 SpaceTL 删除策略：即当最后一级存储层（对象存储空间被视为无限）的存储空间不足时，可选择是否触发 SpaceTL
删除机制以释放空间。
+
+注意：该机制仅会删除最后一个存储层中的文件。
+
+## 2. 参数介绍
+
+| 参数名 | 描述
| 默认值 | 生效方式 |
+| ------------------------ |
---------------------------------------------------------------------------------------------------------
| -------- | ---------- |
+| dn\_tier\_full\_policy | 最后一级存储层存储空间不足时的行为策略。可配置：1. NULL：不做任何处理1. DELETE：开启
SpaceTL 删除数据。 | NULL | 热加载 |
+
+参数说明：
+
+* 若最后一级存储层包含**对象存储**则不触发 SpaceTL
+* 该参数和 dn\_default\_space\_usage\_thresholds 参数联动，当最后一级存储层的可用空间低于
space\_usage\_thresholds 时触发 SpaceTL；默认当磁盘空间占用到达 85% 的时候开始删除直至空间占用降到 85% 以下才会停止
+
+## 3. 使用示例
+
+以三级存储为例，当最后一级存储空间到达85%时，触发 SpaceTL 删除机制开始删除文件。
+
+```Properties
+# data dirs
+# If this property is unset, system will save the data in the default relative
path directory under the IoTDB folder(i.e., %IOTDB_HOME%/data/datanode/data).
+# If it is absolute, system will save the data in exact location it points to.
+# If it is relative, system will save the data in the relative path directory
it indicates under the IoTDB folder.
+# If there are more than one directory, please separate them by commas ",".
+# If tiered storage is enabled, please separate directories of different tiers
by semicolons ";".
+# Use keyword OBJECT_STORAGE to denote object storage media, object storage
can only exist on the last tier and must have local dirs in the front tiers.
+# Note: If data_dirs is assigned an empty string(i.e.,zero-size), it will be
handled as a relative path.
+# effectiveMode: hot_reload
+# For windows platform
+# If its prefix is a drive specifier followed by "\\", or if its prefix is
"\\\\", then the path is absolute. Otherwise, it is relative.
+# dn_data_dirs=data\\datanode\\data
+# For Linux platform
+# If its prefix is "/", then the path is absolute. Otherwise, it is relative.
+dn_data_dirs=/data1/data;/data2/data,/data3/data;/data4/data
+
+# Default tier TTL. When the survival time of the data exceeds the threshold,
it will be migrated to the next tier.
+# Negative value means the tier TTL is unlimited.
+# effectiveMode: restart
+# Datatype: long
+# Unit: ms
+tier_ttl_in_ms=86400000;864000000;-1
+
+# Disk usage threshold, data will be moved to the next tier when the usage of
the tier is higher than this threshold.
+# If tiered storage is enabled, please separate thresholds of different tiers
by semicolons ";".
+# effectiveMode: hot_reload
+# Datatype: double(percentage)
+dn_default_space_usage_thresholds=0.75;0.8;0.85
+
+# How to deal with the last tier?s data when its used space has been higher
than its dn_default_space_usage_thresholds.
+# The info of the two policies are as follows:
+# effectiveMode: hot_reload
+# 1. NULL: do nothing.
+# 2. DELETE: delete the oldest data.
+dn_tier_full_policy=DELETE
+```
+
+在该示例中，共配置了三个层级的存储，具体为：
+
+| 层级 | 存储目录 | 数据保留时间 | 磁盘存储空间阈值
|
+| -------- | ------------------------- | ----------------------------------- |
------------------------------------------------------------------ |
+| 层级一 | /data1/data | 只保留 1 天，超过后会移动到第二级 | 磁盘达到 75% 会移动部分文件到第二级
|
+| 层级二 | /data2/data,/data3/data | 只保留 10 天，超过后到第三级 | 磁盘达到 80% 会移动部分文件到第三级
|
+| 层级三 | /data4/data | 没有过期时间，会一直存储 | 磁盘达到 85%
会删除部分文件（因为dn\_tier\_full\_policy=DELETE） |
