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IBM System Storage DR550 Version 3.0 ------17 March 2006 Page 73
IBM Storage Systems Copyright © 2006 by International Business Machines Corporation
Configuration Database data stored in the system default configuration directory (DCD). If cluster
services are active on the local node, applying a snapshot triggers a cluster-wide dynamic
reconfiguration event. If the apply process fails or you want to go back to the previous configuration
for any reason, you can re-apply an automatically saved configuration.
To apply a cluster snapshot using SMIT, perform the following steps:
1. Enter smit hacmp
2. In SMIT, select HACMP Extended Configuration > Snapshot Configuration > Apply
a Cluster Snapshot and press Enter.
SMIT displays the Cluster Snapshot to Apply panel containing a list of all the cluster snapshots
that exist in the directory specified by the SNAPSHOTPATH environment variable. 3. Select the
cluster snapshot that you want to apply and press Enter. SMIT displays the Apply a Cluster
Snapshot panel.
Undoing an Applied Snapshot
Before the new configuration is applied, the cluster snapshot facility automatically saves the current
configuration in a snapshot called ~snapshot.n.odm, where n is either 1, 2, or 3. The saved
snapshots are cycled so that only three generations of snapshots exist. If the apply process fails or
you want to go back to the previous configuration for any reason, you can re-apply the saved
configuration.