June 25, 20188 yr Hi Guys, So I have a drive that was previously in my Synology Nas that I want to add to my array. However I keep getting problems clearing the drive. When I simply add it to the array to let Unraid clear it, it reached bout 48% then failed citing a read error I believe. Tried to preclear it using the preclear plugin and It it failed during the preread operation. I'm guessing it could have some to do with the linux file format - synology. As far as I am aware, the drive is fine. It passed the smart status on both unraid and synology and I transferred about 3.8 TB of data off it to the array (MC command) just yesterday. Is there any way to rectify this or can the driver simply be formatted without going through the clear process. Assistance will be greatly appreciated. Thanks in advance. Edited June 26, 20188 yr by fallenhd
June 25, 20188 yr Run an extended SMART test or, even better, grab the vendor specific diagnostic tool and run the extended test.
June 25, 20188 yr Author 1 hour ago, Fireball3 said: Run an extended SMART test or, even better, grab the vendor specific diagnostic tool and run the extended test. Ok I'll do this and report back.
June 26, 20188 yr Author 22 hours ago, Fireball3 said: Run an extended SMART test or, even better, grab the vendor specific diagnostic tool and run the extended test. Hi Good Day, I did the extended test and It actually came up with some errors. The report is attached. Not sure what to make of it. Does the drive need to be replaced? WDC_WD40EFRX-68WT0N0_WD-WCC4E3ZF6PF4-20180625-1819.txt
June 26, 20188 yr Yes, you want to replace the drive: # 1 Extended offline Completed: read failure 50% 9721 3933917032 The above is the really bad one. But you also have this one: 197 Current_Pending_Sector -O--CK 200 200 000 - 2
June 26, 20188 yr There are 2 bad sectors pending reallocation. According to the error log there were 5 UNCorrectable read errors at LBA: 3197675968 (IDNF, may show up during write test) 3591151168 (IDNF, may show up during write test) 3933917032 (UNC, reason for abort) 6572318816 (UNC, not known if still persistent at the moment) You need to force the drive to reallocate them. Follow this instruction to do so. That drive has no reallocated sectors at the moment. The counter should increase once you execute that procedure. You can force the write to both UNC LBA listed and run either the long SMART test or the preclear again. RMA ing the drive is no option, as it is out of warranty. 1 hour ago, fallenhd said: Does the drive need to be replaced? It's up to you - many here will say "yes". Once all sectors are reallocated and the preclear doesn't bring up more pending I would consider it OK. The issue is, you will loose single fault tolerance of your array, if this drive is faulty AND another drive fails additionally.
June 26, 20188 yr Author 1 hour ago, pwm said: Yes, you want to replace the drive: # 1 Extended offline Completed: read failure 50% 9721 3933917032 The above is the really bad one. But you also have this one: 197 Current_Pending_Sector -O--CK 200 200 000 - 2 1 hour ago, Fireball3 said: There are 2 bad sectors pending reallocation. According to the error log there were 5 UNCorrectable read errors at LBA: 3197675968 (IDNF, may show up during write test) 3591151168 (IDNF, may show up during write test) 3933917032 (UNC, reason for abort) 6572318816 (UNC, not known if still persistent at the moment) You need to force the drive to reallocate them. Follow this instruction to do so. That drive has no reallocated sectors at the moment. The counter should increase once you execute that procedure. You can force the write to both UNC LBA listed and run either the long SMART test or the preclear again. RMA ing the drive is no option, as it is out of warranty. It's up to you - many here will say "yes". Once all sectors are reallocated and the preclear doesn't bring up more pending I would consider it OK. The issue is, you will loose single fault tolerance of your array, if this drive is faulty AND another drive fails additionally. Thanks for the feedback guys, will take it into consideration. Guess I was really fortunate that I transferred the data when I did.
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