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Legato NetWorker, Release 7.0
Disaster Recovery Guide
9
Back Up the Cluster
140
• System topology information. Generate this information using the
hwmgr -view
command:
# hwmgr -view hierarchy >
sys_topology_file
where sys_topology_file is a file to which you are saving output from the
hwmgr -view hierarchy
command.
• The device layer information. Generate this information as follows:
# hwmgr -view devices >
device_layer
where device_layer is a file to which you are saving output from the
hwmgr -view devices
command.
Back Up the Cluster
To ensure that the cluster is disaster-ready, perform the following steps:
1. Back up the entire cluster.
a. Set up a NetWorker Client resource for the cluster’s default alias.
b. Add the host name of each physical cluster node to the Client
resource’s Remote Access list.
c. Specify a save set of All for the Client resource. A save set of All
ensures that filesystems from all nodes are backed up.
d. Create a NetWorker Group resource, add the Client resource to this
group, and schedule the group for regular backups.
e. Perform at least one full backup.
2. Optionally, back up the stand-alone HP Tru64 boot drive on the cluster’s
primary node to a remote NetWorker server. You may need to mount the
drive partitions temporarily and execute a manual save.
Restoring One or More Nodes in a Cluster
This section explains how to recover one or more physical nodes in a cluster. If
all of the physical nodes in a cluster have been destroyed, see
“Restoring an
Entire Cluster” on page 143 .
Note: To help ensure a successful recovery, have on hand the information
listed in the section titled, “Prerequisites” on page 139 . This information
should have been recorded prior to the disaster.