On 8 Apr 2011, at 19:43, Marion Hakanson <hakan...@ohsu.edu> wrote:

>> which peak at around 7 Gb/s down a 10G link (in reality I don't need  that
>> much because it is all about the IOPS for me).  That is with just  twelve 15k
>> disks.  
> 
> Depending on usage, I disagree with your bandwidth and latency figures
> above.  An X4540, or an X4170 with J4000 JBOD's, has more bandwidth
> to its disks than 10Gbit ethernet.  

Actually I think our figures more or less agree. 12 disks = 7 mbits
48 disks = 4x7mbits
What is actually required in practice depends on a lot of factors

Julian
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