IBM SAN Volume Controller 2147-SV1 - Page 174

The nodes must recognize the same LUNs that the existing nodes in the system can recognize before
they can be added. If the system nodes cannot recognize the same LUNs, the system is marked
degraded.
8. Add the nodes to the system.
9. Check the status of the storage systems and MDisks to ensure that status is not marked degraded.
If the status is degraded, a conguration problem must be resolved before you can do any further
system conguration task. If the problem cannot be resolved, remove the newly added nodes from the
clustered system and contact your system support center for assistance.
What to do next
For specic instructions about adding a node or a replacement node to a clustered system, see the
information about adding nodes to a system.
142 SAN Volume Controller : Model 2145-SV1 Hardware Installation Guide