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RAID volumes not appearing in Disk Utility
Authored by: willdaddy on Nov 14, '10 04:01:40PM
So What about raid5, does that not protect against disk failure?


Multiple disk failure. I've had it happen and it sucks. That RAID you have likely has drives from the same production run and they'll likely have a similar lifetime. Once you've had a drive fail in a RAID 5 and you introduce a new drive, it has to rebuild the new drive from the parity info on the other drives, potentially stressing a drive that doesn't have a whole lot of life in it.

Woe be to you if you don't have a backup or other disaster recovery plan.

While the original poster's solution does seem a bit scorched earth for those of us who like to recover data, it is also a cautionary tale for those who think their RAID is providing backup.

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