From: Michael Monnerie <michael.monnerie@is.it-management.at>
To: xfs@oss.sgi.com
Subject: Re: XFS and DPX files
Date: Tue, 3 Nov 2009 21:58:29 +0100 [thread overview]
Message-ID: <200911032158.29684@zmi.at> (raw)
In-Reply-To: <20091103121920.7e6b6d07@harpe.intellique.com>
On Dienstag 03 November 2009 Emmanuel Florac wrote:
> Michael Monnerie <michael.monnerie@is.it-management.at> écrivait:
> > Hence my suggestion for turning on the disk write cache just to see
> > if it makes a difference.
>
> Unfortunately there isn't any way in the 3Ware controllers to manage
> that. Worse, I couldn't get a clear answer from 3Ware support about
> the controller policy about drives caches. However from the tests
> I've done (pulling the plug on a server while writing) it looks like
> the 3Ware uses the disks caches in write-thru mode, however
> (fortunately now that many drives come with 32 or 64 MB caches).
>
> Some other SATA/SAS RAID controllers (Areca, LSI and Adaptec) allows
> to activate drive write-back cache separately from the controller
> cache, though.
Looks like you didn't read the FAQ until now, I tried to document the
unclear bits as good as I could:
http://www.xfs.org/index.php/XFS_FAQ#Q._Which_settings_does_my_RAID_controller_need_.3F
mfg zmi
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next prev parent reply other threads:[~2009-11-03 20:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-31 12:26 XFS and DPX files AndrewL733
2009-10-31 14:18 ` Emmanuel Florac
2009-10-31 14:37 ` AndrewL733
2009-10-31 16:48 ` Emmanuel Florac
2009-11-02 11:05 ` Michael Monnerie
2009-11-02 17:52 ` Emmanuel Florac
2009-11-02 21:50 ` AndrewL733
2009-11-02 22:26 ` Emmanuel Florac
2009-11-03 3:09 ` Eric Sandeen
2009-11-02 21:58 ` Michael Monnerie
2009-11-03 11:19 ` Emmanuel Florac
2009-11-03 20:58 ` Michael Monnerie [this message]
2009-12-14 16:17 ` Martin Spott
2009-12-14 17:49 ` Michael Weissenbacher
2009-11-02 21:34 ` Eric Sandeen
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