NetBackup catalog backups:  NetBackup catalog backups are different from regular  backups and need special handling to restore. Not having the catalog available at the DR  site means that every tape must be imported to build the catalog, which is impractical and  is not considered a viable option. With the catalog in place at the DR site, the tapes can be  loaded into the library, the library inventoried, and restores can commence in a short  time frame.  Discuss the following key concepts with the NetBackup architects and senior administrators in  the user organization:  After your architects and administrators understand the main concepts, they need to decide  whether to have one domain that spans both sites or two separate domains.  With a single domain approach, the same NetBackup catalog is shared across sites and is  always updated with the whereabouts of all cartridges. ProtecTIER replicates cartridges per the policies that are set by the user. Cartridges are  copied on to a virtual shelf at the DR site.  Replicating cartridges Single domain approach 22.10.7 Single domain versus two separate domains 22.10.6 ProtecTIER disaster recovery with Symantec NetBackup GLYPH<SM590000> In normal operation, back up to a local VTL. – Backing up to a local VTL provides quick backups and quick restores.  – Because VTL replication is at the cartridge level, and only the deduplicated data is  transferred, it reduces the bandwidth that is needed, as compared to traditional  cross-site replication/backups.  GLYPH<SM590000> Split servers for DR in to their RTO classifications. GLYPH<SM590000> Turn off multiplexing (MPX) for all backups that require DR. GLYPH<SM590000> Use large fragment sizes. GLYPH<SM590000> Disable storage checkpoints. GLYPH<SM590000> Disable software compression. Have servers for DR (usually production servers) split into their RTO classifications and  plan for separate volume pools and backup policies. For servers with low RTO  requirements, consider individual volume pools and backup policies.  Multiplexing is accomplished at either the storage unit level or backup policy level. Disable  MPX for all backups that go to the ProtecTIER VTL.  Fragment sizes are configured at the storage unit level. Large fragment sizes improve the  restore performance of whole file systems.  Storage checkpoints have an adverse effect on the deduplication ratios.  Software compression might reduce the efficiency of the ProtecTIER deduplication and  affect its factoring ratio.  420  IBM ProtecTIER Implementation and Best Practices Guide