To "hardware" RAID 5 or software RAID 5
yinyang at eburg.com
Mon Dec 4 21:28:05 UTC 2006
Robin Laing wrote:
> On Sun, 2006-12-03 at 12:13 +0800, Hadders wrote:
>> RAID 6 - less used, but like 5, but handles more than a single disk failure.
> Thanks for this information. I will have to look closer at RAID 6 for
> my new file server.
Naturally, in order to provide the additional redunancy, you sacrifice
more disk space. In a RAID5 set, the parity is stored on the equivalent
of the volume of one disk. Your available space is N-1, where N is the
size of the smallest disk used. In RAID6, the available space is N-2.
The additional redundancy is good if you have a large set of disks, but
if you've got just three, it's probably overkill. RAID5 is the best
solution for a 3 disk set.
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