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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=437B7264.50506@tmr.com \
--to=davidsen@tmr.com \
--cc=linux-raid@vger.kernel.org \
--cc=neilb@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).