About enabling automatic failover to an alternate server
NetBackup allows the administrator to configure automatic restore failover to an alternate server if the original server is temporarily inaccessible. Once it is configured, this method does not require administrator intervention.
See Restore Failover properties.
Some examples of when to use this method are as follows:
Two or more servers share a robot, each with connected drives.
When a restore is requested, one of the servers is temporarily inaccessible.
Two or more servers have standalone drives of the same type.
When a restore is requested, one of the servers is temporarily inaccessible.
In these instances, inaccessible means that the connection between bprd on the master server and bptm on the original server (through bpcd) fails.
Possible reasons for the failure are as follows:
The original server is down.
The original server is up but bpcd on that server does not respond. (For example, if the connection is refused or access is denied.)
The original server is up and bpcd is fine, but bptm has problems. (For example, if bptm cannot find the required tape.)
Note:
The failover uses only the failover hosts that are listed in the NetBackup configuration. By default, the list is empty and NetBackup does not perform the automatic failover.