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Introducing Arcserve Backup Agents and Options › Using Options › Disaster Recovery Option › Recovering NEC Clusters › Disaster Recovery on NEC CLUSTERPRO/ExpressCluster LE › Recover if One NEC CLUSTERPRO/ExpressCluster LE Cluster Node Fails

Recover if One NEC CLUSTERPRO/ExpressCluster LE Cluster Node Fails

When a problem occurs on the server system disk and the system does not operate properly, you must replace the disk and restore the data. To do so, perform the following procedure:

To recover the cluster

  1. If the server to be recovered is running, from the Start menu select Shut Down to shut down the server. If NEC ExpressCluster is running, wait until the failover finishes.
  2. If NEC ExpressCluster is running, select the cluster from the NEC ExpressCluster Manager, choose CLUSTER(M), Property(P) from the menu bar, and check Manual return(F) on the Return mode tag.
  3. Follow the normal disaster recovery process to recover the node.
  4. From the Start menu select Settings, Control Panel, and select Date and Time to confirm that the Date and Time of the server operating system to be restored is identical to the other servers in the cluster.
  5. On the server to be restored, change the Startup type of the following NEC ExpressCluster-related services to Manual:
  6. From the Start menu, select Shut Down to shut down the server to be restored.
  7. On the server to be restored, start the operating system disk administrator and, if necessary, modify the drive letter of the switched partitions so that it is the same as when the backup was performed. Close the disk administrator.
  8. On the server to be recovered, set the Startup type of the following services to Manual and reboot:

    Note: The NEC ExpressCluster Mirror Disk Agent service Startup type should remain set to Automatic.

  9. On the server to be recovered, from the Start menu, select Programs, and select NEC ExpressCluster Server.
  10. Start the Mirror Disk Administrator, select Change, and click Reconstitution.
  11. Check the name of target mirror sets and click OK.
  12. On the server to be restored, reset the startup type of the following services to Automatic and reboot:
  13. On the other server, shut down the cluster and reboot.
  14. When the servers have been restarted, from the NEC ExpressCluster Manager, return the server to be recovered to the cluster.
  15. Select the cluster from the NEC ExpressCluster Manager, select CLUSTER(M), and Property(P) from the menu bar, and reset the Return Mode setting to Auto Return.
  16. Shut down the cluster.