Quote:
Originally Posted by Hack&Lube
That said, mirroring all your drives (RAID 1) would be the simplest way to get what you want if you simply take the mirrored drive out every week and replace it with an empty one and allow the set to rebuild (depends on the software or technology that comes with your system). RAID is not originally intended for this purpose. You might be better off with a separate large storage system that you can do a nightly backup to via software because to get 8GB of swapping means you will be swapping several disks a week.
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/curmudgeon mode on
I detest this approach to using RAID rebuild capabilities to create mirrors of drives. It's not what it's meant for, and its a fools errand to deliberately degrade a RAID data set. If I caught someone doing this with a client's data, I'd fire them.
I'm so glad you pointed out that this is not what RAID is intended for. It's absolutely not, full stop. If _anything_ goes wrong during the rebuild of an N+1 redundant data set, you are potentially hooped. I feel physically ill thinking about the times when things have gone bad, and on the next boot the RAID controller decides the partially initialized mirror drive is actually the primary, intact copy, and mirrors an incomplete stripe set back onto your only good copy.
/curmudgeon mode off
I cannot stress enough H&L's recommendation that it's not how RAID is meant to be used.