Hitachi NAS Platform 4000 Series - Replacing a Node within a Cluster

6. Open Stor
age Navigator and recongure L
UN mapping and host group on the
storage system that is dedicated to the server with the new WWPNs. Perform this
step for every aected server port.
7. If the server does not recognize the system drives, enter fc-link-reset to reset
the ber paths.
8. Enter sdpath to display the path to the devices (system drives) and which hport and
stor
age port are used.
9. Enter sd-list to verify the system drives statuses as OK and access is allowed.
10. Enter span-list to verify the storage pools (spans) are accessible.
Note: In this instance, cluster is synonymous with the standalone server.
11. Enter span-list-cluster-uuids span_label to display the cluster serial
number (UUID) to which the stor
age pool belongs.
The UUID is written into the stor
age pool’s conguration on disk (COD). The COD is a
data structure stored in every SD, which provides information how the dierent SDs
are combined into dierent stripesets and storage pools.
12. Enter span-assign-to-cluster span_label to assign all the spans to the new
server.
13. Verify the IP routes, and enable all the EVSs for le services in case they are
disabled.
14. Recongure any required tape backup application security.
15. Navigate to Home > Status & Monitoring >
Event Logs, and click Clear Event
Logs.
16. Navigate to Home > Status & Monitoring > System Monitor and verify the server
status:
■ If the server is operating normally, and is not displaying any alarm conditions,
run a backup to capture the revised conguration, and then download another
diagnostic to support. Permanent license keys for the replacement server are
normally provided within 7 days.
■ If the server is not operating normally for any reason, contact support for
assistance.
17. Conrm all nal 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 conrmed as working, and all le
systems and storage pools should be online.
Replacing a node within a cluster
Replacing a single node within a cluster assumes only two-node clusters and the
presence of an external SMU, which acts as a quorum device. This helps to simplify the
replacement process because a cluster preserves operational state of the entire system
beyond any single node failure.
Replacing a node within a cluster
Appendix A: Server replacement procedures
Hitachi NAS Platform and Hitachi Unied Storage Series 4000 Hardware Reference 109