Choosing an IBM System z as a Linux/Cloud consolidation server, therefore, has the potential to save IT buyers over a million dollars! Chart Virtual Machines on a Mainframe vs. The cost of running the same environment (on 240 virtualized machines, 24 blades, 192 CPUs) on a group of Nehalem EP-based Intel Xeon servers should be approximately $4,800,000 (see Chart 1). By our estimate, the price of running a heavy I/O workload on 240 virtual machines running on a mainframe (at 70% CPU utilization with a high reliability service level profile) should be approximately $3,300,000. Accordingly, a mainframe can run 240 virtual machines (VMs) as compared with about 10 VMs on an Intel 8 core system (in this comparison, both systems run the same workload at the same service level). ![]() The reason for this advantage is that large scale architecture does not require as much headroom (spare capacity) as smaller systems to execute heavy I/O workloads due to specialized input/output (I/O) characteristics. ![]() ![]() 1 Research Report The Mainframe Virtualization Advantage: How to Save Over Million Dollars Using an IBM System z as a Linux Cloud Server Executive Summary Information technology (IT) executives should be aware that it is possible to save over a million dollars by consolidating Linux servers on a mainframe as opposed to deploying Linux on a group of x86-based multi-core blade servers.
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