The IBM XIV Storage Performance

• lucasonico

  Valued Member

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  June 19, 2012 at 10:09 pm

  #260186

  Hey guys, I wonder if anyone had problems with VMWare architecture (vSphere 5) with an IBM storage (IBM XIV GEN3).

  I have problems in writing io 50 ms of latency.

  Can anyone help me?

• okbangas

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  June 20, 2012 at 1:44 am

  #1503254

  My initial response (as always) is How to prove it's a SAN problem[/url] by Brent Ozar.

  If it really is the SAN causing the problems, there is a lot of things to look into. Among these are caching, RAID levels, any failed drives, how many spindles your LUN spans, what other LUNs are using the same spindles and so on. Not to mention, is it VMware which states that the write latency is 50ms, or the guest OS? Virtualization makes performance troubleshooting a bit more "interresting".

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