From: Stan Hoeppner <stan@hardwarefreak.com>
To: xfs@oss.sgi.com
Subject: Re: op-journaled fs, journal size and storage speeds
Date: Sun, 01 May 2011 23:35:30 -0500 [thread overview]
Message-ID: <4DBE3492.4060303@hardwarefreak.com> (raw)
In-Reply-To: <20110501092758.GG13542@dastard>
On 5/1/2011 4:27 AM, Dave Chinner wrote:
> Got a supplier for the custom hardware you'd need? Just use a PCIe
> SSD....
50GB OCZ RevoDrive PCIe x4 SSD MLC NAND
Dual SandForce 1200 controllers, internal RAID 0 design
70,000 write IOPS, 4KB aligned
350MB/s write sustained
$200 USD at Newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227596
Current best value for a PCIe SSD suitable for dedicated log drive use,
can fit ~22 maximum size (2GB) XFS logs. Note the MLC NAND. If all
your filesystems will sustain constant high rate metadata writes, an SLC
based product is more suitable, though price is 10-50x higher for PCIe
SLC cards. If you want/need the 10x increase in flash cell life of SLC
NAND, go with this Intel SLC SATAII SSD for ~2x the $$ of the Revo.
Note it's write IOPS is 'only' 33k, size is 32GB, 18GB less.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820167013
--
Stan
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prev parent reply other threads:[~2011-05-02 4:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-30 14:51 op-journaled fs, journal size and storage speeds Peter Grandi
2011-05-01 9:27 ` Dave Chinner
2011-05-01 18:13 ` Peter Grandi
2011-05-02 1:23 ` Dave Chinner
2011-05-02 10:40 ` Christoph Hellwig
2011-05-02 4:35 ` Stan Hoeppner [this message]
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