What are the considerations when replacing an HBA host port?
You can replace a when the HBA fails.
Use these guidelines when replacing an HBA host port:
Depending on how the host is taken offline, and registration data for the HBA host port that are no longer part of the configuration might be kept along with current
reservation and registration data. Accumulation of old persistent reservation data eventually might cause the to reach the upper boundary of permitted initiator ports. The RAID controller module also might send an Insufficient Registration
Resources error if another HBA host port attempts to register. The maximum number of per virtual disk depends on your system configuration. The maximum number of registrants per virtual disk is 512.
To prevent an Insufficient Registration Resources error, you must remove the virtual disk reservations and registrations of
HBA host ports that are no longer included in the configuration. Remove virtual disk reservations only during scheduled maintenance
downtimes to prevent interference with cluster server operations.