Re: [Xen-users] Xen and I/O Intensive Loads

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Aug 27, 2009 at 01:08:42PM -0600, Nick Couchman wrote:
> 
> You might have seen my other replies, but here you go...30 disks total active 
> in the SAN, with 2 hot spares.  FCATA drives, 7200 RPM.  I can't really 
> modify the SAN controllers much - they have 4GB read and write caching - I 
> suppose I can ask the vendor if they go any higher on that, but I think 
> that's about the highest it goes.  I may be able to purchase some SSD, but 
> that gets real $$$$ real fast, and I'd rather try out some faster drives - 
> maybe real FC at 10K or 15K RPM. 

If you're IOPS limited then definitely go for 15K drives. 
You'll get 50% more IOPS from them.

-- Pasi


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