Linked by Thom Holwerda on Mon 18th Jan 2010 16:57 UTC, submitted by wanker90210
Hardware, Embedded Systems ACM's latest journal had an interesting article about RAID which suggested it might be time for triple parity raid. "How much longer will current RAID techniques persevere? The RAID levels were codified in the late 1980s; double-parity RAID, known as RAID-6, is the current standard for high-availability, space-efficient storage. The incredible growth of hard-drive capacities, however, could impose serious limitations on the reliability even of RAID-6 systems. Recent trends in hard drives show that triple-parity RAID must soon become pervasive."
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RE[4]: What about 5-way RAID?
by Soulbender on Wed 20th Jan 2010 06:35 UTC in reply to "RE[3]: What about 5-way RAID?"
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B. If you use a 1:3 mirroring, your RAID10 will survive a 2 drive failure, but will waste a staggering 66% of the total disk space.

Sure, but that means you CAN lose more than one drive. If this is a viable compromise or not depends on your needs and requirements. Storage is (relatively) cheap these days, after all.

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