December 19, 201114 yr Others have had strange disk issues dissappear after replacing their poorer quality power supply with a good Corsair or Seasonic.
December 19, 201114 yr P/S is the CoolerMaster 550 that came with the case. (I'm not inclined to suspect it. It has, after all, had zero problems running ALL the drives thru three rebuilds [15+ hours, at least] and monthly parity checks...and when this last failure occurred, only two drives should have been running....just saying) Since my last post: I've allowed the array to rebuild. (I'm getting good at that) Made backup copies of the files on this drive, and have even copied 30-40Gb of new data onto it. Server's been powered on 24/7 for a few days, now- with default drive parking enabled. I kept having something similar. I noticed it happens when the drive was being used. I really think it had something to do with vibration from head movement. The issue rarely came up during parity checks. Since parity checks read the drive constantly and sequentially head movement is slow and methodical vs read a lil, park, read a lil, park, read a lil, park. etc. etc.
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