On 11/07/2012 06:28 AM, Gandalf Corvotempesta wrote:
2012/11/7 Sage Weil <sage@xxxxxxxxxxx>:
On Wed, 7 Nov 2012, Gandalf Corvotempesta wrote:
I'm evaluating some SSD drives as journal.
Samsung 840 Pro seems to be the fastest in sequential reads and write.
The 840 Pro seems to reach 485MB/s in sequential write:
http://www.storagereview.com/samsung_ssd_840_pro_review
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I'm using Intel 510s in a test node and can do about 450MB/s per drive.
Right now I'm doing 3 journals per SSD, but topping out at about
1.2-1.4GB/s from the client perspective for the node with 15+ drives and
5 SSDs. It's possible newer versions of the code and tuning may
increase that.
TV pointed me at the new Intel DC S3700 which looks like a very
interesting option (the 100GB model for $240).
http://www.anandtech.com/show/6432/the-intel-ssd-dc-s3700-intels-3rd-generation-controller-analyzed
Mark
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