From: Bill Davidsen <davidsen@tmr.com>
To: Neil Brown <neilb@suse.de>
Cc: RAID Linux <linux-raid@vger.kernel.org>
Subject: RAID-6
Date: Wed, 16 Nov 2005 12:54:44 -0500 [thread overview]
Message-ID: <437B7264.50506@tmr.com> (raw)
In-Reply-To: <17271.4092.24066.572971@cse.unsw.edu.au>
Based on some google searching on RAID-6, I find that it seems to be
used to describe two different things. One is very similar to RAID-5,
but with two redundancy blocks per stripe, one XOR and one CRC (or at
any rate two methods are employed). The other sources define RAID-6 as
RAID-5 with a distributed hot spare, AKA RAID-5E, which spreads head
motion to all drives for performance.
Any clarification on this?
--
bill davidsen <davidsen@tmr.com>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
next prev parent reply other threads:[~2005-11-16 17:54 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-13 9:05 Raid-6 Rebuild question Brad Campbell
2005-11-13 9:13 ` Brad Campbell
2005-11-13 10:05 ` Neil Brown
2005-11-16 17:54 ` Bill Davidsen [this message]
2005-11-16 20:39 ` RAID-6 Dan Stromberg
2005-12-29 18:29 ` RAID-6 H. Peter Anvin
[not found] <Pine.GSO.4.30.0211111138080.15590-100000@multivac.sdsc.edu>
2002-11-11 19:47 ` RAID-6 H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2002-11-11 18:52 RAID-6 H. Peter Anvin
2002-11-11 21:06 ` RAID-6 Derek Vadala
2002-11-11 22:44 ` RAID-6 Mr. James W. Laferriere
2002-11-11 23:05 ` RAID-6 H. Peter Anvin
2002-11-12 16:22 ` RAID-6 Jakob Oestergaard
2002-11-12 16:30 ` RAID-6 H. Peter Anvin
2002-11-12 19:01 ` RAID-6 H. Peter Anvin
2002-11-12 19:37 ` RAID-6 Neil Brown
2002-11-13 2:13 ` RAID-6 Jakob Oestergaard
2002-11-13 3:33 ` RAID-6 Neil Brown
2002-11-13 12:29 ` RAID-6 Jakob Oestergaard
2002-11-13 17:33 ` RAID-6 H. Peter Anvin
2002-11-13 18:07 ` RAID-6 Peter L. Ashford
2002-11-13 22:50 ` RAID-6 Neil Brown
2002-11-13 18:42 ` RAID-6 Peter L. Ashford
2002-11-13 22:48 ` RAID-6 Neil Brown
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