These are 12TB SAS drives (Seagate ST12000NM0027) for data & hot spare. ZIL & L2ARC are 480GB INTEL SSDSC2KG48 SSDs. Everything is left at default for sector size, etc. They were basically prepared for into the pool with a simple fdisk -B /dev/rdsk/drive.
Ping never shows loss of connectivity. I ran this for about 5 minutes during a test: 303 packets transmitted, 303 received, 0% packet loss, time 302021ms rtt min/avg/max/mdev = 0.109/0.281/2.881/0.227 ms CIFS, scp, and rsync do not exhibit the problem. I forgot to mention that local copies on the file server are also as fast as I would expect (~2 min). pool: pool0 state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM pool0 ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 c0t5000C500A612DA93d0 ONLINE 0 0 0 c0t5000C500957D4A93d0 ONLINE 0 0 0 c0t5000C500957D4C1Bd0 ONLINE 0 0 0 c0t5000C500957D25B3d0 ONLINE 0 0 0 c0t5000C500957D27F3d0 ONLINE 0 0 0 c0t5000C500957D2553d0 ONLINE 0 0 0 logs mirror-1 ONLINE 0 0 0 c0t55CD2E414EC0FF43d0s0 ONLINE 0 0 0 c3t0d0s0 ONLINE 0 0 0 cache c0t55CD2E414EC0FF43d0s1 ONLINE 0 0 0 c3t0d0s1 ONLINE 0 0 0 spares c0t5000C50095722E27d0 AVAIL iostat: extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 15.8 57.5 1302.5 5372.3 823.0 0.6 11233.2 8.4 9 9 pool0 0.1 19.9 1.7 163.0 0.0 0.0 1.0 0.1 0 0 rpool 0.1 10.2 0.9 81.5 0.0 0.0 0.0 0.0 0 0 c1t4d0 0.0 10.1 0.8 81.5 0.0 0.0 0.0 0.1 0 0 c1t5d0 2.7 19.5 337.8 1359.4 0.4 0.0 16.1 0.5 8 1 c3t0d0 1.9 6.0 114.5 442.2 0.0 0.0 0.0 5.0 0 1 c0t5000C500957D27F3d0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0 0 c0t5000C50095722E27d0 1.5 6.0 86.2 442.9 0.0 0.0 0.0 4.7 0 1 c0t5000C500957D25B3d0 1.5 6.0 78.2 442.5 0.0 0.0 0.0 4.2 0 1 c0t5000C500957D4C1Bd0 1.7 6.1 102.4 442.8 0.0 0.0 0.0 4.7 0 1 c0t5000C500A612DA93d0 1.6 6.0 86.6 442.5 0.0 0.0 0.0 4.3 0 1 c0t5000C500957D2553d0 2.0 5.9 122.2 442.2 0.0 0.0 0.0 5.0 0 1 c0t5000C500957D4A93d0 2.9 19.5 374.7 1357.9 0.0 0.0 0.0 1.2 0 1 c0t55CD2E414EC0FF43d0 c1t4d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: ATA Product: INTEL SSDSC2KB24 Revision: 0121 Serial No: BTYS817407RE240 Size: 240.06GB <240057409536 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c1t5d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: ATA Product: INTEL SSDSC2KB24 Revision: 0121 Serial No: BTYS817409YS240 Size: 240.06GB <240057409536 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c3t0d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: ATA Product: INTEL SSDSC2KG48 Revision: 0121 Serial No: BTYM7405027L480 Size: 480.10GB <480103981056 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500957D27F3d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0VFGX0000J74 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C50095722E27d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0S42H0000J75 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500957D25B3d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0VFJV0000J74 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500957D4C1Bd0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0P6050000J83 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500A612DA93d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0WCCN0000J80 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500957D2553d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0VFK30000J74 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t5000C500957D4A93d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: SEAGATE Product: ST12000NM0027 Revision: E001 Serial No: ZJV0VBQ80000R81 Size: 12000.14GB <12000138625024 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 c0t55CD2E414EC0FF43d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 Vendor: ATA Product: INTEL SSDSC2KG48 Revision: 0121 Serial No: BTYM740600ZT480 Size: 480.10GB <480103981056 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 0 Predictive Failure Analysis: 0 nomad
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