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Virtual machine system

  • US 20070192765A1
  • Filed: 05/26/2006
  • Published: 08/16/2007
  • Est. Priority Date: 02/15/2006
  • Status: Abandoned Application
First Claim
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1. A computer readable recording medium recording a program for causing a computer, in order to control operations of a virtual machine system managed by a current host OS virtually operating on a hardware, to function as:

  • means for copying the current host OS to prescribed recording means provided in the virtual machine system when the current host OS is activated, and for causing a spare host OS having the same function as that of the current host OS to operate on the hardware;

    means for notifying the spare host OS of a request issued to the current host OS, and for changing a state of the spare host OS; and

    means for switching an OS for managing the virtual machine system from the current host OS to the spare host OS when the current host OS gets in an erroneous state.

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