Patent ID: 9389900
Filing Date: 2016-07-12
CPC Classification: G06F

Claim Text:
1. A method for supporting a change in state within a cluster of host computers that run virtual machines, the method comprising: identifying a change in state within a cluster of host computers that run virtual machines; determining if predefined criteria for resources to be available to host computers within the cluster of host computers can be met by resources available in the cluster of host computers after the change in state; determining if predefined criteria for resources to be available to host computers within the cluster of host computers can be maintained after at least one different predefined change in state; and supporting the change in state if it is determined that the predefined criteria can be met and if it is determined that the predefined criteria can be maintained; wherein determining if predefined criteria for resources to be available to host computers within the cluster of host computers can be maintained comprises simulating the cluster of host computers, simulating the failure of a predefined number of host computers in the simulated cluster, and determining if the predefined criteria can be maintained based on the simulations.