About catalog recovery
A major problem users encounter during site disaster recovery is that the disaster recovery (DR) site is not a mirror image of the production site. To perform DR operations you need a copy of the NetBackup catalog from the production master server. The NetBackup catalog backup and recovery process is primarily intended for recovering from catalog storage or master server failure rather than site loss. The default situation is that NetBackup restores the complete catalog including the EMM database. The EMM database includes details of the media servers, backup devices, and storage units. Master server use this information to direct backups and restores. Master servers also use this information to interrogate the media servers, to establish the status of the backup devices. In a DR environment which does not contain these media servers, the performance of the master server can be affected. Also, the ability to carry out restore operations can be affected, as polling operations fail to connect and time out.
Use the following approaches to recover the NetBackup environment at a DR site where the arrangement of media servers and clients is different from the main production site. Both approaches have advantages and disadvantages.
In the full catalog recovery approach the whole catalog is recovered and then unwanted configuration elements can be removed or disabled.
In the partial catalog recovery the EMM and the BMR databases are not restored.
The most appropriate method for recovery can be determined by the nature of the DR facility and how similar it is to the production facility.
When creating your disaster recovery plan, ensure that it is in line with the approaches discussed in the following sections:
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