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Sizing and Best Practices for Deploying VMware View 4.5
on VMware vSphere 4.1 with Dell EqualLogic Storage
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Figure 8: Steady state I/O performance detail: PS6000XVS hosting 1014 desktops
Figure 9 shows the I/O performance measured at the individual disk drives within the storage system
at the same measurement point as in Figure 8. The data table below the chart shows that
approximately 85% of the array IOPS were served by the SSD drives and the remaining 15% served by
the 15K SAS drives in the array. The increased I/O load on the 15K SAS drives are due to the fact that
the steady state phase of the test has a high write percentage (25% read and 75% writes in the test
workload) and a significant portion of this I/O is targeted at the differential data disks of the individual
desktop VMs.
Figure 9: PS6000XVS disk drive IOPS during non-persistent desktop steady state phase