From: Robin Bowes <robin-lists@robinbowes.com>
To: linux-raid@vger.kernel.org
Subject: Re: raid5 software vs hardware: parity calculations?
Date: Sat, 13 Jan 2007 23:23:23 +0000 [thread overview]
Message-ID: <eobpl9$df3$1@sea.gmane.org> (raw)
In-Reply-To: <45A917B8.2060706@tmr.com>
Bill Davidsen wrote:
>
> There have been several recent threads on the list regarding software
> RAID-5 performance. The reference might be updated to reflect the poor
> write performance of RAID-5 until/unless significant tuning is done.
> Read that as tuning obscure parameters and throwing a lot of memory into
> stripe cache. The reasons for hardware RAID should include "performance
> of RAID-5 writes is usually much better than software RAID-5 with
> default tuning.
Could you point me at a source of documentation describing how to
perform such tuning?
Specifically, I have 8x500GB WD STAT drives on a Supermicro PCI-X 8-port
SATA card configured as a single RAID6 array (~3TB available space)
Thanks,
R.
next prev parent reply other threads:[~2007-01-13 23:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-11 22:44 raid5 software vs hardware: parity calculations? James Ralston
2007-01-12 17:39 ` dean gaudet
2007-01-12 20:34 ` James Ralston
2007-01-13 9:20 ` Dan Williams
2007-01-13 17:32 ` Bill Davidsen
2007-01-13 23:23 ` Robin Bowes [this message]
2007-01-14 3:16 ` dean gaudet
2007-01-15 11:48 ` Michael Tokarev
2007-01-15 15:29 ` Bill Davidsen
2007-01-15 16:22 ` Robin Bowes
2007-01-15 17:37 ` Bill Davidsen
2007-01-15 21:25 ` dean gaudet
2007-01-15 21:32 ` Gordon Henderson
2007-01-16 0:35 ` berk walker
2007-01-16 0:48 ` dean gaudet
2007-01-16 3:41 ` Mr. James W. Laferriere
2007-01-16 4:16 ` dean gaudet
2007-01-16 5:06 ` Bill Davidsen
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