On 07 Dec 2013, at 14:24 , Dinse, Gregg (NIH/NIEHS) [V] <[email protected]>
wrote:
>
> Hi,
>
> I am looking forward to getting a new Mac Pro, which will require me to buy
> at least one external disk array. I have been looking at a 2-disk
> thunderbolt unit, which can be set up for either RAID 0 or RAID 1 (or JBOD).
> The vendor says that thunderbolt does not allow other RAID levels.
Um, no. Thunderbolt is a connection, it doesn't care how the RAID is configured.
2 Drives are limited in RAID options, however.
> Assuming that the above claim is true, my second question is the following.
> What if I buy a pair of 2-disk thunderbolt units and set them up as RAID 1,
> which should create a mirrored array on each. (Is this considered "hardware"
> RAID?) Can I then use Apple's Disk Utility ("software" RAID?) to stripe the
> mirrored pair and essentially create a RAID 1+0 (or RAID 10) array?
It depends if TB drives are considered internal.
I wouldn't do this though, get a real RAID (or a Drobo) if you want several
drives.
--
"Alas, earwax."
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