On Jan 12, 2005, at 8:35 PM, Bruce Johnson wrote:
(and, by the way, you can indeed put a raid on this system; it'll be external but Firewire raids are quite common, and OS X supports creating raids in software out of any two disks)
I don't want to take this thread off-subject, but...
From the above quote, it sounds like one can create a raid out of two non-identical disks. Is this true? I always thought that raid disks had to be identical (size, brand, speed, etc.).
If they don't have to be identical, that means I can create a raid from the two drives I have in my B&W on a SIIG ATA133 card.
They don't need to be the same anything really. First off RAID doesn't mean mirroring, that is one aspect of RAID but not the only. And you can mirror two drives of different sizes, you can only create a volume the size of the smaller drive though. And you'd still have the remaining space on the larger drive to use. You can also span a volume across two drives to have a larger volume. And you can do a combination such as having 3 (equal size) drives RAIDed to have a volume that is 150% the size of one drive and mirrored.
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