The CA Vtape BSDS should be considered a critical system file. Maintaining a current backup of the BSDS is critical to insuring recoverability if the hardware unexpectedly fails.
The BSDS is typically backed up after batch processing is complete and after Externalizating the Virtual Volumes that were written to during the previous 24 hours. The Tape Management Database and the user catalog containing the CA Vtape Backstore Tape catalog entries should be backed up at this time also.
A synchronized backup of these three data sets is not required. You can take backups within a few minutes of each other.
The backups need to be taken close together so that the current Virtual Volume information in the BSDS matches the Tape Management Database information and they both match the cataloged Backstore Tape information. If this information is too far out-of-sync, CA Vtape may not be able to Recall Virtual Volume Copies without manual intervention and your disaster recovery efforts will be much more complicated.
These backups should be sent off-site for disaster recovery. These backups should not be written to CA Vtape Virtual Volumes.
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