April 27, 20179 yr So a drive in my monster unraid server starting complaining and said it had 8 read errors. Swapped it out, and I've pre cleared it six times so far, no read errors but it does have 1 pending sector. Need advice on what to do, should I trust it and stick it in another unraid server or toss it to the side?
April 28, 20179 yr dd if=/dev/zero of=/dev/sdX bs=512 This will not be fast, but should write new data to all sectors. Another is badblocks -wsv /dev/sdX You could run an extended smart test to try and locate which sector(s) are having trouble reading. That would allow you to focus on just the pending.
April 28, 20179 yr I have had disks with 1 or 2 pending sectors. That never went away, never got worse. I think that after 6 preclears you are on pretty solid ground with the disk. All software has bugs, including the firmware code in drives. And it may have just triggered a pending sector due to a bug.
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