1+1 High Availability clusters can provide continuous access to services during upgrades, when you upgrade one server at a time. You can do this by first upgrading the standby server. After activating the upgraded standby server, then you upgrade the other server.
Navigate to EMElement Status on each server and determine which server has High Availability State of Standby.
To lock the state on the active server, navigate to EMCluster ConfigurationHigh Availability and select the Local High Availability State Lock checkbox.
Click Save.
Click Confirm.
To upgrade the standby server, go to Step 6 of the automatic or manual upgrade procedure.
ADDITIONAL INFORMATION:
Wait for any alarms to clear as the server returns to service and synchronizes the active sessions with the other server.
To unlock the state on the active server, navigate to EMCluster ConfigurationHigh Availability and clear the Local High Availability State Lock checkbox.
Click Save.
Click Confirm.
To put the active server in standby, navigate to EMElement Status and select Failover from the More Actions drop-down menu.
Click Confirm.
ADDITIONAL INFORMATION:
The active server is now the standby server.
To lock the state on the active server, navigate to EMCluster ConfigurationHigh Availability and select the Local High Availability State Lock checkbox.
Click Save.
Click Confirm.
To upgrade the standby server, go to Step 6 of the automatic or manual upgrade procedure.
ADDITIONAL INFORMATION:
Wait for any alarms to clear as the server returns to service and synchronizes the active sessions with the other server.
To unlock the state on the active server, navigate to EMCluster ConfigurationHigh Availability and clear the Local High Availability State Lock checkbox.
