About NetBackup catalog replication
To decide the NetBackup data protection strategy, you need to decide whether the DR site should be part of the same NetBackup domain or be a separate NetBackup domain.
Dynamic multi-streaming support of catalog image for AIR DR scenarios does not ensure image grouping completeness on the target domain. This is because, the bulk/batch operations should ensure consistency of catalog images.
NetBackup can be configured with catalog replication in the following ways:
Multi-site single domain replication
Multi-site cross domain replication