HP B6960-90078 manual Restoring Hard Disk Signatures On Windows, Example

Disaster Recovery

Advanced Recovery Tasks

	Restoring Hard Disk Signatures On Windows
	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. This applies
	only to the restore of the active node, since shared cluster resources are
	operational as long as at least one of the nodes is up and running and
	claims ownership of the resources. This problem does not apply to EADR
	and OBDR critical disks because the original disk signatures of all
	EADR/OBDR critical disks are automatically recovered. In case you have
	replaced any other disks, you will have to restore their hard disk
	signatures as well.
	The most critical shared disk is the cluster quorum resource. If it has
	been replaced, than the original disk signature must be restored, or the
	cluster service will not start.
	During Phase 2, the MSCS Database is restored into the
	\TEMP\ClusterDatabase directory on the system volume. After the
	system is rebooted, the cluster service will not be running, because the
	quorum resource will not be identified due to the changed hard disk
	signature in Phase 1. This can be resolved by running the clubar utility
	(located in the <Data_Protector_home>\bin\utilns), which restores
	the original hard disk signature. After clubar successfully finishes, the
	cluster service is automatically started.
Example	At the command prompt type clubar r c:\temp\ClusterDatabase
	force q: to restore a MSCS Database from c:\temp\ClusterDatabase.
	For more information on clubar usage and syntax, see the clubar.txt
	file located in the <Data_Protector_home>\bin\utilns.
	If the Data Protector shared disk on the Cell Manager is different from
	the quorum disk, it has to be restored as well. To restore the signature of
	the Data Protector shared disk and any other application disk, you
	should use the dumpcfg.exe utility included in the Windows 2000
	Resource Kit. For details on using dumpcfg.exe, run dumpcfg /? or see
	the Windows 2000 Resource Kit documentation. For more information on
	the problems with hard disk signatures on Windows 2000, see MSDN
	article Q280425.

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