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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by gilboa on Tue 19th Jan 2010 07:56 UTC in reply to "RE[2]: RAID Z"
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There is no standard detailing RAID-6, just a widely accepted definition.

ZFS happens to implement something with similar redundancy characteristics to RAID-5 and RAID-6 and also implements triple parity.

I can use a on-board RAID5 controller (read: soft-RAID) built array and move it from Windows to Linux and back, it's a standard.

So? That doesn't change that OpenSolaris supports triple parity right now. Since OpenSolaris has networking support, including CIFS, iSCSI, and NFS serving, it can still be useful to those who don't currently use OpenSolaris.

... And yet, its still irrelevant for the rest of the world.

ZFS is not the only way to provide redundancy for a boot partition.


- Gilboa

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