From: Neil Schemenauer <nas@python.ca>
To: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org
Subject: Re: RAID 5 performance problems
Date: Thu, 3 Apr 2003 11:13:12 -0800 [thread overview]
Message-ID: <20030403191311.GA9406@glacier.arctrix.com> (raw)
Ross Vandegrift <ross@willow.seitz.com> wrote:
> Absolutely correct - you should *never* run IDE RAID on a channel that
> has both a master and slave. When one disk on an IDE channel has an
> error, the whole channel is reset - this makes both disks
> inaccessible,
> and RAID5 now has two failed disks => you data is gone! *ALWAYS* use
> separate IDE channels.
I think it's okay to use both channels if you use RAID0+1 (also
known as RAID10), just be sure to mirror across channels. As a
bonus, RAID0+1 is significantly faster than RAID5.
Neil
next reply other threads:[~2003-04-03 19:13 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-03 19:13 Neil Schemenauer [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-04-04 16:01 RAID 5 performance problems Jonathan Vardy
2003-04-04 16:01 ` Jonathan Vardy
2003-04-05 0:10 ` Jonathan Vardy
2003-04-05 0:10 ` Jonathan Vardy
2003-04-04 15:05 Jonathan Vardy
2003-04-04 15:05 ` Jonathan Vardy
2003-04-04 11:44 Jonathan Vardy
2003-04-04 11:44 ` Jonathan Vardy
2003-04-04 14:39 ` Ezra Nugroho
2003-04-03 20:10 Chuck Ebbert
2003-04-03 19:49 Andy Arvai
2003-04-03 20:25 ` Mike Dresser
2003-04-03 20:25 ` Mike Dresser
2003-04-03 21:10 ` Jonathan Vardy
2003-04-03 21:10 ` Jonathan Vardy
2003-04-03 21:31 ` Ezra Nugroho
2003-04-03 15:45 Jonathan Vardy
2003-04-03 15:45 ` Jonathan Vardy
2003-04-03 18:05 ` Peter L. Ashford
2003-04-03 18:05 ` Peter L. Ashford
2003-04-03 18:47 ` Ross Vandegrift
2003-04-03 19:22 ` Stephan van Hienen
2003-04-03 19:20 ` Stephan van Hienen
2003-04-03 19:28 ` Alan Cox
2003-04-03 21:02 ` Ezra Nugroho
2003-04-03 21:25 ` Stephan van Hienen
2003-04-03 21:38 ` Peter L. Ashford
2003-04-03 21:38 ` Peter L. Ashford
2003-04-03 22:09 ` Jonathan Vardy
2003-04-03 22:09 ` Jonathan Vardy
2003-04-03 22:16 ` Jonathan Vardy
2003-04-03 22:16 ` Jonathan Vardy
2003-04-03 22:28 ` Peter L. Ashford
2003-04-03 22:28 ` Peter L. Ashford
2003-04-03 21:42 ` Jonathan Vardy
2003-04-03 21:42 ` Jonathan Vardy
2003-04-03 22:13 ` Peter L. Ashford
2003-04-03 22:13 ` Peter L. Ashford
2003-04-04 20:39 ` H. Peter Anvin
2003-04-03 21:06 ` Felipe Alfaro Solana
2003-04-03 21:14 ` Jonathan Vardy
2003-04-03 21:14 ` Jonathan Vardy
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