Introducing Arcserve Backup Agents and Options › Using Options › Disaster Recovery Option › Recovering Clusters › Scenario 2: Shared Disk Failure › Recover Clusters with Partial Shared Disk Configurations

Recover Clusters with Partial Shared Disk Configurations

In an environment with a partial shared disk configuration, shared disks can have a unique, one-to-one relationship with individual nodes. We recommend that you have the Cluster Disaster Recovery Requirements readily available for reference when performing this disaster recovery process.

You must perform the following tasks:

1. Recover one node with some shared disks first while other shared disks that are not owned by this node are shut down.
2. Recover another node with some shared disks. You must shut down all shared disks not owned by the node.
3. Repeat this process until you have recovered all nodes with shared disk resources.

After performing these actions, you can recover the nodes with no shared disk resources.

To recover a cluster with a partial shared disk configuration

1. Recover one node with some shared disk resources by performing the following steps:
   1. Stop the cluster services on all nodes.
   2. Disconnect shared disks not owned by this node during backup. Refer to the Cluster Disaster Recovery Requirements and dumpcfg.txt to identify which shared disks are not owned by this node.
   3. Follow the disaster recovery procedure to recover the node.
2. Repeat the previous step until you have recovered all nodes with some shared disk resources.
3. Recover nodes with no shared disk resources. Follow the disaster recovery procedure to recover the node.
4. Restart all nodes in the following order:
   1. Restart all nodes with shared disk resources.
   2. Restart all nodes without shared disk resources.

   Your cluster should now be back online.