On Wed, 19 Mar 2008, Andrej Ricnik-Bay wrote: > > On 18/03/2008, Craig Ringer <craig@xxxxxxxxxxxxxxxxxxxxx> wrote: >> Isn't a 10 or 24 spindle RAID 5 array awfully likely to encounter a >> double disk failure (such as during the load imposed by rebuild onto a >> spare) ? that's why you should use raid6 (allowing for dual failures)
And, if possible, try to use drives from a couple of different batches. I wouldn't go crazy trying to do this, but sometimes a combination of drives from two or three batches can make a difference (though not always).
Also, a very informative read: http://research.google.com/archive/disk_failures.pdf
In short, best thing to do is watch SMART and be prepared to try and swap a drive out before it fails completely. :)
