Restoring The Nas Server And Storage Array In A High Availability Environment - HP StorageWorks 8000 - NAS User Manual

Recovering from a Disaster
Restoring the NAS Server and Storage Array in a High
Availability Environment
The procedures for recovering NAS servers and storage arrays in high availability
(HA) environments are similar to those previously described. In the case of HA,
the DRF contains additional information, including the cluster package
configuration and some control files.
You can use the NAS 8000 disaster recovery solution as part of a non-disruptive
recovery of one node while the other nodes in the cluster continue to operate
normally. A non-disruptive recovery essentially involves the ability to exploit the
NAS 8000 cluster's failover capabilities and disaster recovery functionality to
recover the full cluster without experiencing down time or losing any
configuration state.
For a single-node failure, the normal recovery method is to:
The HA registry replication mechanism will take the appropriate actions to
synchronize the registries among the nodes of the cluster.
In the unlikely event of a multi-node cluster failure, do the following:
1. Reinstall the NAS 8000 operating system on both nodes.
2. Recover both servers using their own DRF files.
Note:
the registry.
3. Reboot both nodes and start the cluster.
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Reinstall the operating system software on the replacement node
Recover the server configuration using a saved DRF file
Rejoin the HA cluster
Do not mix up the DRF files because there is hardware dependent information in
HP StorageWorks NAS 8000 User's Guide