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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 ...
mattjax05 - as a non-computer/IT person I have often tried to figure this out myself. After 5 years and multiple NAS units, and replacing failed drives and upgraded array disks one at a time, I finally just accepted that it works.
StephenB - thanks for the explanation of the formula. I think that most of the non-technical types assumed as I did that the parity block was somehow a copy, what you have pointed out is that it is not, it is a separately created data block that permits a missing data block to be recreated. Thank you for the explanation.
StephenB - thanks for the explanation of the formula. I think that most of the non-technical types assumed as I did that the parity block was somehow a copy, what you have pointed out is that it is not, it is a separately created data block that permits a missing data block to be recreated. Thank you for the explanation.
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