Download Data Replication Manager HSG80 Version 8.7P Scripting User Manual

9
Short Planned Site Failover with Fast
Failback Procedure
This chapter provides the procedure for performing a short planned site failover with a
fast failback.
This procedure ensures the proper functioning of a failover and subsequent failback
during short duration maintenance activities. When a planned site failover is used with
a fast failback, each remote copy set must be in an association set with a write history
log enabled. Because of the short duration of the planned outage, the write history log
will be able to accommodate the accumulated writes. These are the sequence steps:
•
Initiator Site Preparation Procedure
•
Running the Short Planned Failover Program File Procedure
•
Target Host Setup Procedure
•
Running the Fast Failback Program Files Procedure
•
Initiator Site Cleanup Procedure
NOTE: In this chapter, the I symbol is used to identify a procedural step performed at the
initiator site, and the T symbol is used to identify a target-site procedural step.
Initiator Site Preparation Procedure
I
1. Before performing the failover procedure, locate your record of SHOW command
output that details the current initiator configuration. Verify that your target
controller configuration is the same as your initiator controller configuration.
Data Replication Manager HSG80 ACS Version 8.7P Scripting User Guide
9–1