Transcription of Virtual Machine Monitors
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Virtual Machine Monitors
B. Virtual Machine Monitors Introduction Years ago, IBM sold expensive mainframes to large organizations, and a problem arose: what if the organization wanted to run different oper- ating systems on the Machine at the same time ? Some applications had been developed on one OS, and some on others, and thus the problem. As a solution, IBM introduced yet another level of indirection in the form of a Virtual Machine monitor (VMM) (also called a hypervisor) [G74]. Specifically, the monitor sits between one or more operating systems and the hardware and gives the illusion to each running OS that it con- trols the Machine .
Virtual Machine Monitors B.1 Introduction Years ago, IBM sold expensive mainframes to large organizations, and a problem arose: what if the organization wanted to run different oper-ating systems on the machine at the same time? Some applications had been developed on one OS, and some on others, and thus the problem.
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