IMPORTANT:
MSCS can be recovered using any disaster recovery method except for Disk Delivery
Disaster Recovery. All specifics, limitations and requirements pertaining a particular
disaster recovery method you are going to use also apply for the disaster recovery of a
MSCS. For details on supported operating systems, refer to the
HP Data Protector product
announcements, software notes, and references
.
All prerequisites for disaster recovery (i.e. consistent and up-to-date backup, updated
SRD file, all faulty hardware replaced...) must be met to recover MSCS.
Consistent backup for MSCS should include (in the same backup session):
• all nodes
• administrative virtual server (defined by the administrator)
• if Data Protector is configured as a cluster aware application, Cell Manager
virtual server and IDB.
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.
Disaster recovery guide 97
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