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Best Practices, Xserve Raid
We recently puchased four new 500GB dives for the Xserve Raid we got last year to use as our media drive for our FCP system. Previously, the array held four 250GB drives in Raid 5, striped on one controler.
How would you configure the new arrangement?
The arrangement that seems to make most sense to me would be to distrubute four drives each to each of the two contollers.
Question: For video editing, does it make sense to stay with Raid 5, or does it make more sense to go Raid 0, since all the media could be redigitized from tape should a drive fail. (Or, in this case, across two controllers, Raid 00 or Raid 50)
Question: Can I place 2 250GB drives and 2 500GB drives on the same controller, yeilding 1.5TB storage, or would the controller only see 1TB becasue of the mismatched drives? If so, would I have to put all 250s on one side, and all 500s on the other? And if so, could I still do Raid 00 or Raid 50, or would I have to do Raid 0 or Raid 5 only?
Since we are currently using just 4 250s in Raid 5 on one controller, I assume, once I install the new drives, I am going to have to go into disk utility and reformat the array and loose all data currently stored. Is there any way I can install the new drives, change the Raid, and still keep the data without having to redigitize anything?
Note, we are not using Xserve or servers since this array is currently only supporting one FCP system. We may next year hook up another FCP system to it, but if so, we would likely split the array into two drives, one per system to avoid the unjustifyable costs of going to Xserve on a system with just two workstations hanging off of it.
Thanks for your insight.
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