Thanks for writing this
We are launching a 30-60 desktop View 4 pilot on Netapp NFS storage
And I will be closely monitoring the IOPs via vscsistats
Well the subject of this post certainly go my attention. This is a definite concern of mine. What I've found in my research on this is that we should expect somewhere between 5 - 8 IOPS per View user. We run an EqualLogic iSCSI SAN and have the headroom there for our project provided those IOPS estimates are correct.
I'm wondering if there is a tool available to simulate the VDI load on a SAN?
actually, that's exactly what's going wrong. using tools to simulate load (read: lab environment) is what's skewing the numbers. the only way to be sure is to run a pilot. but because that is usually not a real option, go by other people's experience. i wrote a small tool to give you a general idea what the impact of the numbers from the whitepaper is. check out the VDI sizing tool on http://virtuall.eu/whitepapers/solutions.