PRIMECLUSTER Installation and Administration Guide 4.1 (for Solaris(TM) Operating System)

13.1.1 Client Cluster

Takeover of consistent settings for backup operation in the cluster environment (that does not require the NetWorker definition changes in the event of a failover) is enabled for the data on a shared disk or local disk of a PRIMECLUSTER system.

Also, standby operation of the NetWorker client is supported.

Virtual client backup

Data on the shared disk, which is managed by PRIMECLUSTER, can be backed up with a logical node name (virtual server name).

The logical node name is a virtual name associated with a virtual IP address that is defined by the PRIMECLUSTER takeover IP address. This name is controlled by the PRIMECLUSTER Wizard for NetWorker control to support virtual NetWorker client/server/storage nodes.

By using the logical node name, NetWorker can handle the cluster system easily in the same way as a single system. Thus, data on the shared disk can be backed up from the standby node (new operating node) without changing the definition of NetWorker and the backup data can be recovered from either of the nodes.

The logical node names can be specified for each user application in the cluster. Even in a cluster system with multiple user applications that are shown in an operation mode such as N:1 standby or mutual standby, each user application is handled as a single system. This enables the data on each shared disk to be backed up and recovered with the logical node name.

Local backup of the cluster configuration node

The data on the local disk of each cluster node can be backed up with the physical node name of the cluster node. Since the NetWorker client operates on all nodes that configure the cluster, the data on the local disk of the standby node can also be backed up. The settings for backup operation are taken over to the standby node without the NetWorker definition changes in the event of a failover.

Standby operation of NetWorker client

Standby operation of the NetWorker client can be provided on PRIMECLUSTER by:

• Starting up the NetWorker client for data backup on the local and shared disks on an operating node.
• Starting up the NetWorker client for data backup on the local disk on a standby node.

Also, the process monitoring facility (detector) that is exclusive to the NetWorker client monitors the NetWorker client process, and if a failure occurs, detects and notifies PRIMECLUSTER of the failure. This feature enhances the availability of the backup system.