Hardware: SFP+ or 10GBase-T

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I have tried to make Gluster FS work for last 2 years on different
projects and have given up. With Gluster I have always used 10 gig
Infiniband. Its dirt cheap (about $80 a port used including switch)
and very low latency, however ceph does not support it so we are
looking at ethernet.

I know that 10GBase-T has more delay then SFP+ with direct attached
cables (.3 usec vs 2.6 usec per link), but does that matter? Some
sites stay it is a huge hit, but we are talking usec, not ms, so I
find it hard to believe that it causes that much of an issue. I like
the lower cost and use of standard cabling vs SFP+, but I don't want
to sacrifice on performance.

Our plan is to use our KVM hosts for ceph, the hardware we are looking
at how is:

SPF+ Option - Supermicro X9DRW-7TPF+ (Intel 82599)
10GBase-T Option - Supermicro X9DRW-3TF+ (Intel x540)

2 - 2.9 GHz Xeon 2690 v2
16 - 8 Gig 1877 MHz dual rank DDR3
9 - Samsung 840 EVO 120 GB SSD (1 root 8 ceph)

Switch is going to be Arista 7050-T for SFP+ or Arista 7050-S for 10GBase-T.

-- 
><>
nathan stratton | vp technology | broadsoft, inc | +1-240-404-6580 |
www.broadsoft.com
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