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

5–8 Compaq StorageWorks Data Replication Manager HSG80 ACS Version 8.5P Operations Guide
NOTE: Association Sets do not need to be deleted.
5. Disable host access to the units by using the following CLI command:
SETUnitName DISABLE=(InitiatorHostConnectionNamex,InitiatorHostConnectionNamey)
IMPORTANT: Do not disable access to the target connection.
Repeat this step for all units.
6. Each unit should have four connections enabled to TargetRemoteCopyNameA,
TargetRemoteCopyNameB, TargetRemoteCopyNameC, and
TargetRemoteCopyNameD. To see the connections, type the following CLI command:
SHOW UNITS FULL
If access to the units is not enabled currently, issue the following command for each
unit to enable access.
SET UnitName ENABLE=TargetRemoteCopyNameA,TargetRemoteCopyNameB,
TargetRemoteCopyNameC,TargetRemoteCopyNameD
7. Shut down the initiator HSG80 controllers (in this order) with the following CLI
commands:
SHUTDOWN OTHER_CONTROLLER
SHUTDOWN THIS_CONTROLLER
8. Power off the controller cabinet after the preceding command has completed and both
controllers have shut down successfully. If the initiator site will be powered down for a
long period of time, it may be necessary to disable cache batteries.
From the Target Site—Site Failover Procedure
1. At the target site the units must be preferred to one controller or the other. Use the
following CLI command:
SET UnitName PREFERRED_PATH = THIS_CONTROLLER or OTHER_CONTROLLER
Repeat this step for each remote copy set unit.
2. The SITE_FAILOVER command allows you to move the initiator role to the target.
This allows the target to accept read/write commands and set up write history logging
for fast-failback when the connection to the initiator site is restored.
SITE_FAILOVER InitiatorRemoteCopyName\RemoteCopySetName
You will see a %EVL message on your terminal.
Repeat this step for each remote copy set.