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Forum Discussion
Xraid 5 Parity and Stripping how much capacity?
I've been trying to get my head round this one. Take a 4 drive nas for instance with four 500gb drives. With xraid5 the volume availanle is 1500gb. That's where I'm stumped and I know it's because of ...
Thanks for reply. So what does the parity block contain when all disks are operational? In my head I see the following (based on 4 drives (A.B.C.D), 4x500gb disks and 4 blocks):
A. B. C. D.
83 83 83 249
83 83 249 83
83 249 83 83
249 83 83 83
The 249s are parity blocks (copies of data) and the 83s are data. All the 83s total 1,000gb capacity (bar rounding) but in this array it should be 1,500gb capacity, shouldn't it?
A. B. C. D.
83 83 83 249
83 83 249 83
83 249 83 83
249 83 83 83
The 249s are parity blocks (copies of data) and the 83s are data. All the 83s total 1,000gb capacity (bar rounding) but in this array it should be 1,500gb capacity, shouldn't it?
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