Yea, the vmware study was way to simplistic, however I believe that they came to the correct conclusion...
We have over 35 ESX hosts, and 950VMs across 2 fas3070's and one fas3050 and performance over 18 months has never come up, not even once. And we expect be able to put 2-3000 VMs on this system before hitting a storage limit.
I have an iometer config that runs 25 tests on a VM with disks connected to the ESX host via FC, iSCSI and NFS datastores. The test compares one storage solution to another for raw performance of one VM. I was suprised by the swing in results that I got...
Below is an example output... It compares one vendor to another and the results show where the storage device is faster or slower when compared to the other.
For the example below, the other vendor is 2x faster for 100 %reads, however the fas3070 is up to 5x faster for other workloads.
The #1 netap feature is that it can run FC, iSCSI and NFS from the same box. So protocol is less of an issue, since you can do all three protocols at the same time from the same device.
