I have a Thecus N5200 Pro with 5 x 500GB WD drives: 4 in a RAID5 with 1 as a hot spare.
I've recently had a drive showing a warning so as advertised the RAID automatically started to rebuild itself using the spare drive. The time for this rebuild was some 7,800 minutes - some 5.5 days!! Around 3 days into this rebuild the original spare drive had I/O errors and so I replaced that drive and started the rebuild again; once again the time for the rebuild is similar - over 5 days.
Is this amount of time to rebuild a RAID5 normal?
Regards
Skier