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From: Stan Hoeppner <stan@hardwarefreak.com>
To: xfs@oss.sgi.com
Subject: Re: Xfs delaylog hanged up
Date: Tue, 23 Nov 2010 19:40:45 -0600	[thread overview]
Message-ID: <4CEC6D1D.1080706@hardwarefreak.com> (raw)
In-Reply-To: <4CEC5E15.7080307@shiftmail.org>

Spelic put forth on 11/23/2010 6:36 PM:
> On 11/23/2010 11:48 PM, Emmanuel Florac wrote:
>> So Spelic, you're using the 3Ware as a SATA controller, but not a RAID
>> controller? This is quite unexpected, though going with md
>> instead provides better IOPS.
>>    
> 
> Yep, because I know MD better, I can see the code, it's more flexible
> and customizable, can be controlled with scripts more easily... Also
> parameters to the underlying drives can be controlled if I use MD, and
> it's easier to align filesystem to stripes. Also my time is better spent
> learning it as MD won't change the next time I buy a different hw
> controller.
> What would be the advantage of using hardware raid?

If there is no advantage then why buy an $800+ real hardware RAID card
and then deploy it as a vanilla SAS/SATA HBA with software RAID?  What a
waste of a decent RAID card...

You could have gone with two of these instead
http://www.newegg.com/Product/Product.aspx?Item=N82E16816117157

saving ~$500 and having similar if not slightly better performance with
software RAID.

-- 
Stan

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  reply	other threads:[~2010-11-24  1:39 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-22 19:27 Xfs delaylog hanged up Spelic
2010-11-22 23:29 ` Dave Chinner
2010-11-23 11:17   ` Spelic
2010-11-23 13:28     ` Spelic
2010-11-23 20:46     ` Dave Chinner
2010-11-23 22:14       ` Stan Hoeppner
2010-11-24  0:20         ` Dave Chinner
2010-11-24 13:12           ` Spelic
2010-11-24 21:50             ` Dave Chinner
2010-11-23 22:48       ` Emmanuel Florac
2010-11-24  0:36         ` Spelic
2010-11-24  1:40           ` Stan Hoeppner [this message]
2010-11-24  6:18           ` Michael Monnerie
2010-11-24  7:44           ` Emmanuel Florac
2010-11-24  0:58       ` Spelic
2010-11-24  5:44         ` Dave Chinner
2010-11-25 23:34       ` Spelic
2010-11-26  4:20         ` Dave Chinner
2010-11-24 22:52 ` Spelic
2010-11-26 22:43   ` Spelic
  -- strict thread matches above, loose matches on Subject: below --
2010-11-24  4:03 Richard Scobie

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