Re: OSD nodes with >=8 spinners, SSD-backed journals, and their performance impact

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Mark Nelson writes:
> http://www.supermicro.com/products/chassis/2U/826/SC826BA-R920LP.cfm

> That chassis has 12 3.5" bays in front, with 2 2.5" bays in back.

FWIW, we have a few Quanta S210-X22RQ[1], which are very similar - 2U,
12 3.5" bays in front, 2*2.5 in back.  We'll try a similar configuration
to what you propose, though with only 8 spinning disks (3TB WD RED) and
one SSD (256GB Samsung 840 pro).  2*10GE, 2*Xeon E5-2630, 128GB RAM.

> an interesting setup could be 12 spinning disks, with 2 very fast SSDs
> used for journals and OS.  Would need to test it first, and not sure I
> like putting the OS on the journal drives.  A more modest setup would
> be just to have the 12 spinning disks for data and journals and the
> rear drives for the OS.
-- 
Simon.

[1] http://www.quantaqct.com/en/01_product/02_detail.php?mid=27&sid=145&id=147&qs=82

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