Effective Data Change Based Rule to Enable Backup for Specific VMware Virtual Machine

摘要

One embodiment is related to a method for backing up virtual machines, comprising: determining whether virtual machines comprised in a backup policy group are to be backed up based on a present time and a backup schedule associated with the backup policy group; in response to a determination that the virtual machines comprised in the backup policy group are to be backed up, determining a data change ratio since a previous backup for each virtual machine comprised in the backup policy group; and backing up each virtual machine comprised in the backup policy group that has a data change ratio since the previous backup that meets a data change threshold associated with the backup policy group.