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 stand-alone 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.
|
