What's the best way to RAID my Mac Pro?
May 11, 2010 11:05 AM Subscribe
I'm looking for answers and advice about configuring an internal RAID array in a Mac Pro.
I don't have a lot of real-world experience with RAID, but my work computer was spec'd out with four 640GB hard drives and a hardware RAID controller.
It's total overkill for my work (web development), but I suppose that is a good problem to have.
I'm not sure which configuration is best for me, but I do know the current setup (1 boot JBOD drive, and 3-disk RAID 5, which I'm not responsible for) is not ideal.
I could go for performance and set all 4 drives as a RAID 0+1.
The downside to this is I'd have to find another backup solution. Also, since I'm in web, I don't usually work with huge files... will I even gain that much?
I'm leaning toward going for redundancy and backup by splitting the drives into two mirrored sets of two: one for use and one for Time Machine. Then I'll have instant failover if one drive in either set fails and also will have a local backup.
My question about this approach is: could I get a fifth drive to occasionally cold swap with one of the boot drives so I could have one semi-updated drive kept offsite? Will the RAID be able to handle that sort of regular intentional degradation and efficiently diff the out-of-sync drive?
Also, just a general question: does the Apple RAID controller do anything to the drives that would make them unusable in a different system without a RAID?