1) mount the backup Datastore from which you want to restore
2) power off the vm to restore
3) remove the disks from the vm
4) connect the backed up disks from the Datastore you mounted.
At this point you can move the disks with svmotion or better you can power on the vm and then svmotion the disks while userS work again. The vm can be up up and running in 5 minutes. I think you need the flex clone license to mount the backup.