HP Legato Networker User Manual download pdf (Page 116)

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Replacing the Quorum Disk and Recovering Its Data

116

Replacing the Quorum Disk and Recovering Its Data

This section provides information about the quorum resource and explains

how to recover a quorum disk’s data.

About the Quorum Resource

If there is a communication failure between the nodes, the MSCS software uses

the quorum resource in an arbitration process to determine the members of the

cluster nodes. The quorum resource also records changes made to the cluster

database when one of the nodes in the cluster is down.

Refer to the Microsoft Cluster Server documentation for detailed information

on how to:

• Locate the quorum disk

• Locate the quorum data directory

• Change the quorum disk designation

Recovering the cluster configuration data on the quorum disk is important

during a disaster recovery. Recovery of the quorum resource information is not

automatic.

If the quorum disk is owned by a virtual server, configure the virtual server as

a NetWorker client. For the client’s Save Set attribute, specify one of the

following:

•All

• The disk volume or directory that contains the quorum data

If the quorum disk is not owned by a virtual server, configure all the nodes as

NetWorker clients. For the Save Set attributes, specify one of the following:

• All (this is preferred)

• The disk volume or directory that contains the quorum data

Note: The quorum disk is accessible from only one node at a time. Therefore,

the backup will fail over to the node that does not have access to the quorum

disk. This is why specifying save set All is preferred over specifying the disk

volume or directory that contains the quorum data.

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HP Legato Networker User Manual Page 116