My EX4100 device with four 3 TB drives in RAID 5 recently informed me of a “bad S.M.A.R.T.” problem in a drive.
I’ve replaced the bad drive with a new 4TB one and started rebuilding the RAID.
After several hours, the rebuilding failed.
I was able to recover 99% of the content (7.5 TB) by copying the files into an external device and deleted all files that gave me error while copying.
I then started the RAID rebuilding again, but it still fails when reaching 90% of the process, so I guess the error caused by the bad drive propagated into the other drives.
So my questions are:
- Is there a way to know what file(s) is still causing the RAID rebuilding failure?
- If so, should deleting the file(s) (as well as I’ve deleted all files I couldn’t copy) let the RAID rebuild correctly?
All my data come from a couple of folders, which I’ve a backup copy of, but I would like to avoid wiping the entire RAID and re-upload all 7.5 TB.
Thanks for your help.