On Tue, 2008-03-18 at 11:04 -0700, david@lang.hm wrote:
On Wed, 19 Mar 2008, Andrej Ricnik-Bay wrote:
>
> On 18/03/2008, Craig Ringer <craig@postnewspapers.com.au> 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. :)