From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-raid@vger.kernel.org
Subject: Re: RAID-6
Date: Thu, 29 Dec 2005 10:29:57 -0800 (PST) [thread overview]
Message-ID: <dp19v5$sjr$1@terminus.zytor.com> (raw)
In-Reply-To: 1132173592.23464.459.camel@seki.nac.uci.edu
Followup to: <1132173592.23464.459.camel@seki.nac.uci.edu>
By author: Dan Stromberg <strombrg@dcs.nac.uci.edu>
In newsgroup: linux.dev.raid
>
>
> My understanding is that RAID 5 -always- stripes parity. If it didn't,
> I believe it would be RAID 4.
>
> You may find http://linux.cudeso.be/raid.php of interest.
>
> I don't think RAID level 6 was in the original RAID paper, so vendors
> may have decided on their own that it should mean what they're
> selling. :)
>
RAID-6 wasn't in the original RAID paper, but the term RAID-6 with the
P+Q parity defintion is by far the dominant use of the term, and I
believe it is/was recognized by the RAID Advisory Board, which is as
close as you can get to an official statement. The RAB seems to have
gotten defunct, with a standard squatter page on their previous web
address.
-hpa
next prev parent reply other threads:[~2005-12-29 18:29 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 ` RAID-6 Bill Davidsen
2005-11-16 20:39 ` RAID-6 Dan Stromberg
2005-12-29 18:29 ` H. Peter Anvin [this message]
[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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