onyx00 Posted August 8, 2020 Share Posted August 8, 2020 During a recent parity check I received a notification about a SMART error on one of the disks (below). I observed no other issues (read/write errors, etc.) and the parity check completed successfully without any errors or corrections. Despite being ~8 years old the drive itself is fine according to SMART, with no reallocated sectors or pending, etc., and a subsequent parity did not trigger this error again (although I did move all data off the disk just in case so not sure if that is why...). I searched the forums and seems this error is less of a concern unless I am observing other issues. Any suggestions on what I do? Would it be wise to swap the drive and then do some pre-clears on it to confirm there are no issues? Thanks in advance! Here is the error I received for reference: Event: Unraid Disk 1 SMART health [1] Subject: Warning [TOWER] - raw read error rate (failing now) is 4294933651 Description: Hitachi_HDS723020BLA642_MN1220F327PH3D (sdc) Importance: warning Quote Link to comment
BRiT Posted August 8, 2020 Share Posted August 8, 2020 I would go about scheduling a replacement for the 8 year old drive. Its far easier and better to be proactive in data health than be reactive and have to hope for recovery working 100%. Quote Link to comment
onyx00 Posted August 8, 2020 Author Share Posted August 8, 2020 Yeah good point...no sense rolling the dice. Thx! Quote Link to comment
trurl Posted August 8, 2020 Share Posted August 8, 2020 1 hour ago, BRiT said: Its far easier and better to be proactive in data health than be reactive and have to hope for recovery working 100%. And to add to this point, if another disk failed and you still had this disk in the array, you might not be able to recover either. In order to reliably rebuild every bit of a missing disk, all bits of parity PLUS all bits of all remaining disks must be reliably read. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.