Introducing Arcserve Backup Agents and Options › Using Options › Disaster Recovery Option › Recovering NEC Clusters › Disaster Recovery on NEC CLUSTERPRO/ExpressCluster SE › Arcserve Backup Installed on the NEC CLUSTERPRO/ExpressCluster SE Cluster › Shared Disk Failure on NEC CLUSTERPRO/ExpressCluster SE › Recover Data with Arcserve Backup Installed on NEC CLUSTERPRO/ExpressCluster SE Shared Disks

Recover Data with Arcserve Backup Installed on NEC CLUSTERPRO/ExpressCluster SE Shared Disks

To recover the data residing on the shared disks, if the Arcserve Backup was installed on the shared disk, perform the following procedure:

To recover the data residing on the shared disks

1. On each cluster node, select Control Panel, Services, and change the Startup Type of the following services to Manual:
   • NEC ExpressCluster Server
   • NEC ExpressCluster Log Collector
2. Shut down the cluster and turn off all servers.
3. Turn off the shared disk. Replace the shared disk, if necessary.
4. Turn on the shared disk and set the shared disk parameters.

   If you must reconstruct a RAID configuration or change a LUN configuration, use the setting tool belonging to the shared disk. See the shared disk product documentation for more information about the setting tool.

   If you perform any settings or configuration from a cluster node, turn on only one server at a time.

5. Perform the following steps on the primary cluster node:
   1. Perform local disaster recovery on the primary cluster node. Ensure that the data on the shared disk containing the Arcserve Backup installation is restored.
   2. If you have performed X-Call settings for a disk, start the NEC ExpressCluster Disk Administrator and specify the recovered shared disk as X-CALLDISK in the X-CALL DISK configuration.

      If you have performed X-Call settings for HBA, these settings are unchanged. No action is necessary.

   3. Confirm that the disk access path is dualized, if applicable. For example, if the NEC dual port utility 2000 Ver.2.0 (UL1214-102) is used, see the product manual for more information.
   4. Reboot the server.
   5. From the NEC ExpressCluster Disk Administrator, verify that the cluster letters on the CLUSTER disk partition are the same as the original letters.
   6. Shut down the cluster node.
6. Perform the following steps on all cluster nodes:
   1. Boot up the cluster node.
   2. Using the operating system disk administrator, specify a drive letter for the shared disk, if necessary. This letter should be the same as the original drive letter.
   3. Reset the Startup type of the following services to Automatic:
      • NEC ExpressCluster Server
      • NEC ExpressCluster Log Collector
   4. Shut down the server and shut down the cluster node.
7. Start all cluster nodes and, from the NEC ExpressCluster Manager, perform the Return to Cluster(R) operation to recover all servers to Normal.