Upgrading NetBackup in a clustered replication configuration
In order for global failover to work correctly, both the main and the alternate site clusters must run the same version of NetBackup. This means that both clusters must be upgraded at the same time. The upgrade process requires you to disable the replication link and upgrade each cluster independently.
To upgrade NetBackup in a clustered replication configuration
- Disable global cluster failover for the duration of the upgrade.
- Suspend replication between the main and the alternate sites.
- Ensure that the alternate site cluster is isolated from the wider network so that it cannot contact the media servers and clients when it comes online.
- Upgrade NetBackup on the main primary server cluster, following the standard upgrade procedures. (Refer to the NetBackup Upgrade Guide.)
- If you have both NetBackup CA-signed and external CA-signed certificates, you need to manually configure the active and the inactive nodes after the DR package recovery. Certificates for the virtual name are backed up with the DR package during catalog backup.
- Run backup and restore tests to confirm that the upgrade has been successful.
- Bring the alternate site cluster online and mount the replicated catalog volume to it.
- Upgrade NetBackup on the alternate primary server cluster following the standard upgrade procedures. (Refer to the NetBackup Upgrade Guide.)
- Perform the following steps, based on the type of certificates in your environment.
NetBackup CA-signed (host ID-based) certificates
Fetch the host ID-based certificates for all nodes on the alternate site, following the procedure to deploy the certificate. (Refer to the NetBackup Security and Encryption Guide.)
External CA-signed certificates
For successful host communication, you must configure all nodes to use external certificates after a disaster.
For more details, refer to the NetBackup Security and Encryption Guide.
- Take the alternate site cluster offline. This action avoids unnecessary and potentially time-consuming post processing operations on the alternate site catalog volume.
- Re-connect the alternate site cluster to the wider network.
- Restart the replication process and allow the replicated volume to fully synchronize.
- Enable global cluster failover.
- Perform a failover to the alternate site and perform backup and restore tests to confirm that the upgrade was successful.
- If required, fail the global cluster back to the main site.