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SEAMLESS TAKEOVER OF A STATEFUL PROTOCOL SESSION IN A VIRTUAL MACHINE ENVIRONMENT

  • US 20120102135A1
  • Filed: 10/22/2010
  • Published: 04/26/2012
  • Est. Priority Date: 10/22/2010
  • Status: Active Grant
First Claim
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1. A method comprising:

  • operating a first virtual server in an active role in a host processing system to serve a client, by using a stateful protocol between the first virtual server and the client;

    associating a second virtual server in a passive role with the first virtual server; and

    in response to a predetermined event, causing the second virtual server to take over the active role from the first virtual server, while preserving state for a pending client request sent to the first virtual server in the stateful protocol.

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