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System and method for providing services for offline servers using the same network address

  • US 8,078,717 B1
  • Filed: 05/04/2011
  • Issued: 12/13/2011
  • Est. Priority Date: 02/16/2001
  • Status: Active Grant
First Claim
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1. A system for controlling virtual servers comprising:

  • a plurality of virtual servers running on a clustered computer system having multiple hardware servers tied together, the virtual servers sharing an operating system handling the cluster;

    each virtual server having an associated address and a unique system-wide identifier;

    each virtual server responding to requests from clients;

    each virtual server including an internal control procedure operable inside the virtual server for control of that virtual server using the associated address and the unique system-wide identifier; and

    an external control interface operable outside the virtual server for control of the virtual server in response to commands sent by a remote user using the associated address and the unique system-wide identifier,wherein, if a particular virtual server is non-responsive, the external control interface can be used to manage that virtual server using the associated address and the unique system-wide identifier associated with that virtual server,wherein the external control interface is executed on any of the hardware server of the cluster and is available to the remote user when a particular virtual server is unresponsive, or when the internal control procedure of that virtual server is unreachable, or when services provided by the internal control procedure are unreachable.

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