B
bronco
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Well, RAID 1 is for redundancy. If one drive fails you always have the other. RAID 0 is not so much for extending the disk capacity but more for performance reasons. Since there's a limit on how much data a hard disk can deliver (in terms of bandwidth) the idea behind RAID 0 (striping) is that if have a file, half the file is on one disk and the other half on the other disk. So if one drive can deliver x MB/s, two drives can deliver 2x. In short RAID 10 (with 4 disks) gives roughly twice the throughout speed of a RAID 1 config (with 2 disks). If you need it, that's up to you. You can do 2 thing IMHO for max performance: - 8 disks in 1 RAID 10 config - split these disks, 6 in RAID 10 for the data, 2 in RAID 1 for the before image files. I've seen customers with 3 logical disks, 1 for the OS, 1 for temp files and before image files and the rest for the data. The possibilities are endless, there's hardly a one size fits all for this.
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