About catalog backups to OpenStorage devices
Both full catalog recovery and partial catalog recovery is possible from a primary catalog backup copy on disk storage. Therefore, you can write a hot catalog backup to an OpenStorage disk appliance and then recover the catalog from the primary copy. Caveat: the recovery must be in the domain in which the catalog was created.
NetBackup also supports duplication of the catalog by using a Storage Lifecycle Policy. However, limitations exist for recovery from non-primary copies of the catalog backup or from catalog copies in other domains.