Disaster Recovery

Advanced Recovery Tasks

the primary node must have write access to all IDB volumes, when recovering the Cell Manager

all other nodes must be shut down until all physical disk resources are online

In this case, you have to restore the primary node with the quorum disk first. The IDB has to be restored as well if the Cell Manager has been installed in the cluster. Optionally you can restore the MSCS database. After the primary node has been restored, you can restore all remaining nodes.

NOTE

The MSCS service uses a hard disk signature written into the MBR of

 

every hard disk to identify physical disks. If the shared cluster disks

 

have been replaced, this means that the disk signatures were changed

 

during Phase 1 of disaster recovery. As a consequence, the Cluster

 

Service will not recognize the replaced disks as valid cluster resources,

 

and cluster groups depending on those resources will fail. See “Restoring

 

Hard Disk Signatures On Windows” on page 495 for more information.

 

 

Perform the following steps to restore the primary node:

1.Perform disaster recovery of the primary node (including the quorum disk).

Assisted Manual Disaster Recovery: All user and application data on the quorum disk will be restored automatically by the drstart command. (-full_clusoption)

EADR and OBDR: When you are asked to select the scope of recovery, select Full with Shared Volumes to restore quorum disk.

Automated System Recovery: All user and application data on the quorum disk will be automatically restored.

Chapter 10

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