Compaq StorageWorks Data Replication Manager HSG80 ACS Version 8.5P Operations Guide

Managing Site Failover and Failback Procedures 5–13
6. For OpenVMS, if you have shut down the host, boot the host at this time. Booting the
host enables OpenVMS to recognize the drives. If you did not shut down the host, use
the following command from a privileged account to enable OpenVMS to recognize
the drives:
MCR SYSMAN I0 AUTOCONFIGURE/LOG
Unplanned Failover
Use the procedures outlined in this section with the Full Failback or New Hardware
Failback procedures.
Failover From the Target Site
IMPORTANT: Since the initiator may be running and perhaps performing I/O, care must be
taken to insure that the connection between the sites be severed and not be restored until
directed to do so in the proper failback procedure.
1. Insure that the connection between sites is not restored by typing the following CLI
commands:
SET THIS_CONTROLLER PORT_2_TOPOLOGY = OFFLINE
SET OTHER_CONTROLLER PORT_2_TOPOLOGY = OFFLINE
2. At the target site, the units are required to be preferred to one controller or the other
using the following CLI command:
SET UnitName PREFERRED_PATH = THIS_CONTROLLER or OTHER_CONTROLLER
Repeat this step for all units.
3. Use the following CLI command to failover each remote copy set (maximum of
twelve per subsystem):
SITE_FAILOVER InitiatorRemoteCopyName\RemoteCopySetName
You will see a %EVL message on your terminal.
Repeat this step for all remote copy sets.