HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

Chapter 16: SAN Maintenance 167
Server Cannot Be Located
If the cluster reports that it cannot locate a server on the SAN but you
know that the server is connected, there may be an FC switch problem.
On a Brocade FC switch, log into the switch and verify that all F-Port and
L-Port IDs specified in switchshow also appear in the local nameserver,
nsshow. If the lists of ports are different, reboot the switch. If the reboot
does not clear the problem, there may be a problem with the switch.
Also consult your FC switch documentation or the FC switch vendor. If
the switch appears to be operating properly, contact HP Technical
Support.
Online Insertion of New Storage
HP Clustered File System supports online insertion (OLI) of new storage,
provided that OLI support is present for your combination of storage
device, SAN fabric, HBA vendor-supplied device driver, and the
associated HBA vendor-supplied libhbaapi. (Check with your vendors to
determine whether OLI is supported.)
NOTE: OLI of new storage can cause an interruption of normal
operations on your storage device. Because of this, it is
recommended that OLI of new storage be scheduled for off-peak
hours.
When the appropriate lower-level OLI support is in place, inserting a
new disk will cause a new device to automatically become eligible for
importing. The disk can be imported with the Management Console or
mx utility, and can be used normally from that point forward.
If OLI is not possible with your hardware combination, you will need to
reboot the servers after inserting a new disk. The disk will then be visible
to the cluster.