April 23, 20188 yr Hi, I just got this message. (reallocated sector ct is 1) I understand the message, the question I am asking myself is: how sever is it, and should I be concerned? Should I take any action? It is from my cache disk.
April 23, 20188 yr Community Expert It's never a good sign, difficult to say more without seeing the diagnostics.
April 23, 20188 yr In theory - a sector goes bad and drive reallocates it, using one of the spare sectors that the drive holds in reserve. The bad sector is never used again. All is good. But in practice, this is rarely observed. Typically a single drive reallocation is only a symptom of a larger problem that will keep getting worse. I've had a few drives with a small number of reallocated sectors that never got worse. But this was in my very early years with unRAID - drives were IDE and probably ~250G - 300G. Since then I personally have not had any reallocated sectors until drives were 6+ years old and rapidly got worse. You can post diagnostics and Johnnie may be able to see something. An extended smart test is probably in order.
April 24, 20188 yr Author Downloaded the S.M.A.R.T. data after running a check on the drive. nano-smart-20180424-0747.zip
April 24, 20188 yr Community Expert Look fine for now, as long as it doesn't keep getting new reallocated sectors it should be OK.
April 24, 20188 yr Community Expert 31 minutes ago, tillo said: How meany would be an "okey" number of allocated blocks? There is not really an OK number - just that the number stays stable. If it keeps increasing then that is a typical sign of a disk that might fail in the near future. Having said that I would be worried about any disk where the number is not in single figures even though technically a disk typically has thousands of spare sectors that can be used for reallocation.
February 11, 20242 yr Got this happening on a budget ssd - Fanxiang S101 2TB SSD SATA III 6Gb/s 2.5" Internal Solid State Drive, Read Speed up to 550MB/sec, Has a 3year 'chinese warranty' but to activate you message amazon support they offer a full refund. Edited February 11, 20242 yr by dopeytree
November 5, 20241 yr Hi guys. I have got also this error (with Seagate Ironwolf I guess). Can you check my diagnostics to know if I have to be afraid of bigger problem? Thx so much in advance! tower-diagnostics-20241105-1058.zip
November 5, 20241 yr Community Expert Zip is invalid, but that by itself is not a big deal, you can run an extended SMART test.
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