BacPac's new disk duplication feature provides a way to make image copies of OpenVMS disks over a network between OpenVMS systems which are not clustered.This feature allows production system disks to be duplicated onto a backup computer system for rapid recovery from a production system failure. Switchover to the backup system is very fast because there is no need to wait for the disks to be restored from backup savesets.In addition to copying a disk, BacPac can also write a saveset at the same time so that a redundant backup of the disk is available.