INCREASING DISASTER RESILIENCY BY HAVING A POD BACKED UP TO OTHER PEER PODS IN A SITE OR BEYOND

摘要

Increasing disaster resiliency in one aspect may comprise running an optimization algorithm that simultaneously solves for at least a first objective to increase a spread of a backup of virtual machines from a given site onto other sites in proportion to an amount of available space for backup at each site, a second objective to increase a number of backups at one or more of the other sites with low probability of system crash while reducing backups at one or more of the other sites with higher probability of system crash, and a third objective to minimize a violation of recovery time objectives of the virtual machines during recovery. One or more backup sites and one or more recovery sites in an event the given site crashes may be determined based on a solution of the optimization algorithm.

主权项

1. A method of increasing disaster resiliency in a computer system, comprising:
executing, by a processor, an optimization algorithm that solves simultaneously for at least a first objective to increase a spread of a backup of virtual machines from a given site onto other sites in proportion to an amount of available space for backup at each site and a second objective to increase a number of backups at one or more of the other sites with low probability of system crash while reducing backups at one or more of the other sites with higher probability of system crash, the optimization algorithm minimizing a sum of the first objective that is weighted and the second objective that is weighted, the optimization algorithm solved subject to at least data privacy constraints associated with at least the virtual machines to be backed up; and determining at least a backup site and a recovery site for the given site based on a solution of the optimization algorithm.