Ray, you can setup a software RAID on a MacPro under Snow Leopard for
RAID0 (stripe) or RAID1 (mirror) with Disk Utility just as you have
done before. You only need the additional RAID card to create more
advanced level of RAID (such as a combination of mirror and stripe).
As far as I'm aware, the drives capacity (and/or manufacturer) don't
HAVE to be identical at all, you will just find that the two slices of
the RAID need to be the same. For example, you can use a 200GB drive
and a 320GB drive, but your mirror RAID will only ever be able to be
200GB. It is recommended to use the same size drives, only so you're
no wasting capacity as you would in the above instance.
For an increased safety level in an ideal world, you would want to use
the same capacity drives from the same manufacturer but a different
production batch.
On 01/11/2009, at 5:24 PM, Ray Forma wrote:
I am currently running MacOS 10.4.11 (Tiger) on my G5 Mac. With two
hard disks installed I am able to run them as a mirrored RAID set.
This gives me a form of internal backup in case of hard disk failure.
I am considering updating to MacOS 10.6 (Snow Leopard), and a
current MacPro, the one with the Nehalem processor. Does anyone know
if Disk Utility will still allow me to set up a mirrored RAID set on
such a MacPro, assuming I fit two identical hard drives. Note that I
am NOT planning to get the A$1000 plus raid card for the MacPro.
--
Regards,
Ray Forma
Tel & Fax 61 (0)8 9335 6568
Mob 61 (0) 428 596938
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