Hello,
even we have no experience in NBU7, I think
the behavior is similar as in NBU 6.5 – the thing is the FC-ID. In this
FC-ID the Domain-ID of the Switch is encoded, so the change you made resulted
in different FC-IDs.
On an AIX System those IDs are used. It was
possible to delete the drives in NetBackup and to delete the device, but not
create new devices. We simply had stop NetBackup on that machine, then we were
able to delete and rescan the drives on the OS. After a new Start of NetBackup we
were able to create the drives again.
Good luck,
Hans-Peter