Many installations require some type of facility for the storage of critical tape data sets at a location other than the tape library. The storage unit may be a fireproof vault at the installation, or a location other than the computer site. The off-site storage facility enables you to protect valuable data in case of fire or disaster.
CA 1 includes a Vault Management System (VMS) to automatically control, rotate, assign vault slot numbers, and report on vaulted (off-site storage) tape data sets. The utilities that make up the CA 1 Vault Management System should be executed as often as necessary to meet your site's guidelines for transferring tapes to off-site storage. VMS should only be executed after all data sets to be moved have been created. For a discussion of VMS see the section Using the Vault Management System (VMS).
If you incorporate the VMS utilities (TMSVMEDT, TMSVMVLT, and TMSVMUPD) in your normal CA 1 daily maintenance cycle, they should be executed after TMSCLEAN has finished scratch processing. This prevents expired tapes in the vault from appearing prematurely on the Scratch and Clean Listing, before they have been physically returned to the tape library.
It is a good idea to run TMSCOPY prior to the VMS utilities, then move the alternate backup of the TMC (created by TMSCOPY) to the off-site location with your other data sets. (You need to ensure that you have provided the Vault Management System with the data set name of this alternate backup.)
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