Veritas NetBackup™ in Highly Available Environments Administrator's Guide

Last Published:
Product(s): NetBackup (8.3.0.1, 8.3, 8.2)
Platform: Linux,UNIX,Windows
  1. NetBackup protection against single points of failure
    1. About protecting against component failures
      1.  
        About protecting against network link failures
      2. About protecting against storage device connection failures
        1.  
          About protecting against SAN connection failures
        2.  
          About protecting against robotic control connection failures
      3.  
        About protecting against storage device failure
      4.  
        About protecting against media availability failures
      5.  
        About protecting against master server failures
      6. About protecting against media server failures
        1.  
          About protecting against dedicated media server failures
        2.  
          About protecting against non-dedicated media servers failures
        3.  
          About protecting against SAN media server failures
        4.  
          Restoring tape backups using an alternative media server
        5.  
          Restoring disk backups using an alternative media server.
      7.  
        About protecting against LAN client failures
      8.  
        About protecting against SAN client failures
    2.  
      About protecting against site failures
    3.  
      About protecting catalog in highly available environments
  2. About site disaster recovery with catalog backup and recovery
    1.  
      Disaster recovery packages
    2. About catalog recovery
      1.  
        About full catalog recovery
      2.  
        Performing full catalog restore
      3.  
        Making the DR environment consistent after a full catalog restore
      4.  
        About partial catalog recovery
      5.  
        Performing partial catalog restore
      6.  
        Making the DR environment consistent after a partial catalog restore
    3. About disk recovery in DR domain
      1.  
        Disk recovery in single-domain replication DR environment
      2.  
        Auto Image Replication
      3.  
        Disk recovery in cross-domain replication DR environment
  3. About site loss protection with auto image and catalog replication
    1.  
      About Auto Image Replication (AIR)
    2. About NetBackup catalog replication
      1.  
        About conditions for support of replicated NetBackup catalogs
      2.  
        About catalog synchronization
      3. About multi-site single domain replication
        1.  
          About multi-site single domain with stretched SAN
        2.  
          About multi-site single domain with optimized duplication
      4. About multi-site cross domain replication
        1.  
          About multi-site cross domain and BasicDisk storage
        2.  
          Planning a cross domain replication disaster recovery domain
      5. About full catalog replication
        1.  
          Recovering the catalog with full catalog replication
        2.  
          Making the DR environment consistent with full catalog replication
      6. About partial catalog replication
        1.  
          Preparing an environment for partial catalog replication
        2.  
          Recovering the environment with partial catalog replication
        3.  
          Making the disaster recovery environment consistent with partial catalog replication
        4.  
          Considerations for managing tapes with partial catalog replication
  4. Deploying NetBackup master servers with full catalog replication
    1.  
      About replication considerations
  5. Using NetBackup to perform backups and restores in a cluster
    1. About backups and restores with NetBackup in a cluster
      1.  
        Performing user-directed backups with NetBackup in a cluster
      2. About restoring data in a cluster
        1.  
          Example: Performing a user-directed restore in a NetBackup cluster
    2. About supported NetBackup application agents in a cluster
      1.  
        About backing up database files in a cluster
      2.  
        About user backups
      3.  
        About NetBackup client in a cluster

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.

Note:

In a cluster setup, if you use external CA-signed certificates for host communication, ensure that the virtual name and the cluster nodes have the same certificate authority (CA) usage. For example, if a node uses only external CA-signed certificates, ensure that the virtual name also uses external CA-signed certificates. If there is a mismatch in the CA usage of the virtual name and cluster nodes, catalog backup and catalog recovery may fail.

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.

    See About partial catalog recovery.

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: