Replacing All Servers Within A Cluster; Obtaining Backups, Diagnostics, Firmware Levels, And License Keys - Hitachi NAS Platform 4000 Series Hardware Reference Manual

6. Select the node from the Preferred Cluster Node list, and then click apply.
7. Navigate to Home > Status & Monitoring > Event Logs, and then click Clear Event
Logs.
8. Confirm all final settings, IP addresses, customer contact information, service
restarts, client access, and that customer expectations are all in place. Features such
as replication and data migration should all be confirmed as working, and all file
systems and storage pools should be online.

Replacing all servers within a cluster

If both servers with an external SMU that are nonfunctioning, and does not have a recent
backup saved off platform, then a challenging and manual recovery process is necessary.
If this circumstance is encountered, call the support organization for a copy of the
system's latest diagnostics files, if available, to be used as a guide in reestablishing the
system manually. The data and file systems will remain intact independent of the
replacement and without a backup.
Important: Set expectations up front with the customer that this will delay
time to recovery, and that some aspects of the systems configuration might
never be recovered.

Obtaining backups, diagnostics, firmware levels, and license keys

On the old server:
Hitachi NAS Platform and Hitachi Unified Storage Series 4000 Hardware Reference
Appendix A: Server replacement procedures
Replacing all servers within a cluster
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