March 5, 20206 yr Hi all, Recently, I replaced my two Samsung 850 EVO drives with SanDisk Ultra 3D SSD 1TB drives because the 850 EVOs were getting higher and higher reallocated sector counts. I got an error the other morning saying that one of the new SanDisk Ultra 3D SSD 1TB drives has a reallocated sector. I've only had these drives for a couple months! The drives are setup in a BTRFS pool. Should I take action (send drive in using warranty)? I'm also wondering if my reads/writes are really high for the amount of time I've been using the drives - is my configuration incorrect in some way? Thanks! SanDisk_SDSSDH3_1T00_193170800920-20200305-1355.txt morpheus-diagnostics-20200305-1409.zip Edited March 5, 20206 yr by airs Added diagnostics
March 9, 20206 yr Community Expert You can replace the devices or ignore for now, but it's a hardware problem, unrelated to you config or Unraid.
March 9, 20206 yr Author 7 hours ago, johnnie.black said: You can replace the devices or ignore for now, but it's a hardware problem, unrelated to you config or Unraid. So the usage of the cache pool looks reasonable then? I'm wondering if there is something that is using the pool excessively, causing unnecessary wear and thus reallocated sectors?
March 9, 20206 yr Community Expert There are some reports of excess writes to the cache pool in some configurations, but nothing that would explain a new device getting reallocated sectors after 2 months.
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