Lab Validation: EMC Symmetrix VMAX and Microsoft Server Virtualization Scalability
The Hyper-V R2 and Symmetrix VMAX solution presented in this report was designed to deliver predictably fast performance for a consolidated pool of virtualized applications. The enterprise-class performance of the solution starts with a powerful cluster of industry standard multi-core servers; the processing power, memory, and internal bandwidth of the solution can be scaled to meet the needs of the business by simply adding more servers to the cluster. Next, Hyper-V R2 leverages the bare metal hypervisor acceleration technology built into the latest multi- core servers to minimize any potential overhead in the server virtualization layer. Last, but not least, the massively scalable architecture of the Symmetrix VMAX delivers predictably high levels of storage performance for a growing number of virtual machines.
ESG Lab audited a series of performance tests performed on the 1,024 virtual machine cluster. The result of an IO- intensive performance test that was run on one of the servers in the cluster is shown in Figure 9. This particular test was designed to measure the performance of a growing number of virtual machines sharing a single CSV residing on an EMC Symmetrix VMAX. The average IO response time was recorded as the number of virtual machines scaled from eight to 64. To put the response times in perspective, a Microsoft guideline for the maximum response time for Exchange database reads (20 milliseconds) is shown as a green dotted line.
Figure 9. EMC VMAX Performance Scalability with Hyper-V R2
Performance Scalability (Response Time) (One Microsoft Hyper-V R2 Server, one EMC VMAX Cluster Shared Volume, 8 through 64 VMs)
Response Time (milliseconds)
32 40 Virtual Machines
IOs per second
Table 2. EMC VMAX Performance Scalability with Hyper-V R2
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