Patent ID: 9575785
Date: 2017-02-21
CPC Classifications: G06F

Claim:
1. A cluster system comprising: a first physical server having registered therein an active virtual machine; and a plurality of physical servers, wherein the plurality of physical servers comprises a second physical server having registered therein a standby virtual machine corresponding to the active virtual machine, the active virtual machine failing over to the standby virtual machine when a failure occurs in the first physical server, wherein each of the plurality of physical servers stores post-failure registration information when the failure occurs, wherein the post-failure registration information associates the active virtual machine with a physical server among the plurality of physical servers, and wherein the physical server is different from the second physical server, and wherein the post-failure registration information associates another standby virtual machine registered in the first physical server with another physical server among the plurality of physical servers, and wherein said another physical server is different from a physical server having registered therein another active virtual machine corresponding to said another standby virtual machine.