About HBA port detection on Solaris
On systems earlier than Solaris 10 Update 7, NetBackup detects the PCI bus and allows ports on one bus only to be used for target mode.
The following is the port detection behavior on systems earlier than Solaris 10 Update 7:
The first choice is the bus with the most 2312 target mode ports.
If there are no 2312 target mode ports, the bus with the most 24xx target mode ports is used.
Target mode ports on other busses are not used.
Beginning with Solaris 10 Update 7, target ports on more than one bus are supported on Solaris 10.