About virtual machines and hardware snapshots
Hardware snapshot-based solution for VMware uses storage array snapshots for protecting VMware virtual machines. The benefits of using hardware snapshot are the reduced stun time for virtual machine. The VM snapshot is retained only for the duration of hardware snapshot.
This solution uses the NetBackup snapshot manager for performing hardware snapshots. For more information about NetBackup snapshot manager, refer to the NetBackup™ Snapshot Manager for Data Center Administrator's guide.