On 28/05/13 12:16, Chris Walker wrote:
So 2 questions. Does anybody have any recommendations for discs or are the Western Digital discs ok? And second, should I replace both or is one ok for the time being?
Depends on the hours on the drives. I find non NAS grade HDD's in an always on setup tend to bail (on average) after 3 years.
Then I have had drives where an array of 3 drives have all failed within 1000 hours of each other. Worse still the array rebuild can uncover problems with the remaining drives you didn't know you had.
If the data is/was important to you and you don't already have a good backup I'd take one now.
Recovery issues with RAID have gone up as the member drives have grown in size as the unrecoverable read error rate hasn't scaled by the same factor as storage. So for example a 8x2TB RAID 5 array built from regular SATA drives is statistically unlikely to be able to rebuild itself if a member fails.