Disaster Recovery

Advanced Recovery Tasks

•all nodes

•administrative virtual server (defined by the administrator)

•if Data Protector is configured as a cluster aware application, then Cell Manager virtual server and IDB should be included in the backup specification.

Disaster Recovery of a Secondary Node

This is the basic scenario for disaster recovery of a MSCS. The following must be true in addition to other prerequisites for disaster recovery:

•at least one of the cluster nodes is functioning properly

•the cluster service is running on that node

•all physical disk resources must be online (i.e. owned by the cluster)

•all normal cluster functionality is available (the cluster administration group is online)

•the Cell Manager is online

In this case, the disaster recovery of a cluster node is the same as the disaster recovery of a Data Protector client. You should follow the instructions for the specific disaster recovery method that you will use to restore the secondary node.

NOTE

Only local disks are restored, because all shared disks are online and

 

owned by the working node(s) during recovery and locked.

 

 

After the secondary node has been recovered, it will join the cluster after boot.

You can restore the MSCS database after all nodes have been recovered and have joined the cluster to ensure its coherency. The MSCS database is part of the CONFIGURATION on Windows. See “Restoring the Windows CONFIGURATION” on page 280.

Disaster Recovery of the Primary Node

In this case all nodes in the MSCS are unavailable and the cluster service is not running.

Chapter 10

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