vSphere VS Hyper-V

In a multiple workload test based on a single tile, the same hardware could perform about 23 more input/output operations per second (IOP) under vSphere than under Hyper-V. The test, reports Network Computing, is to determine the maximum level of load the test system can handle while still delivering data within JetStress' 20ms maximum latency limit. The SnapSAN S2000, connected to the same Dell R710 server, could handle 733 aggregate IOPs under Windows Server 2008 R2 with Hyper-V and 955 aggregate IOPs under vSphere when running the multiple workload benchmark.

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Multiple workload test proves vSphere has a cleaner I/O path than Windows.

"I'm sure some Microsoftie, or MS fanboi, will respond to this post with tuning tips for Hyper-V, and I'll be grateful for them. However, the simple truth will remain that, in DeepStorage.net tests of high I/O workloads, vSphere supported more virtual machines per host than Hyper-V."

Read the Full Story at Network Computing