I have reviewed the outputs of the OA and the corresponding host, and find that the PWWNs on OA are just the same as the host's PFC PWWNs！
So what are the PWWNs for 20:00:74:46:a0:71:1a:0b/20:11:74:46:a0:71:1a:0b that seen on the SAN switch side？ NPIVs？
------------------------------- Blade 001 -------------------------------
1 QLogic QMH2562 8Gb FC HBA for HP BladeSystem c-Class
Port 1 OK Bay 3 Port 1 50:01:43:80:26:65:95:f8
Port 2 OK Bay 4 Port 1 50:01:43:80:26:65:95:fa
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp# fcdutil /dev/fcd4 npiv_info
PFC Hardware Path = 0/0/0/5/0/0/0
PFC DSF = /dev/fcd4
PFC Class Instance = 4
PFC Driver state = ONLINE
PFC Port WWN = 0x50014380266595f8
PFC Node WWN = 0x50014380266595f9
PFC Switch Port WWN = 0x2045c4f57cca2ec4
PFC Switch Node WWN = 0x1000c4f57cca2ec4
FlexFC Virtual Fibre Channel (VFC)
----------------------------------
Maximum Supported FlexFC VFC = 16
Number Active FlexFC VFC = 0
HPVM Virtual Fibre Channel (VFC)
----------------------------------
Maximum Supported HPVM VFC = 48
Number Active HPVM VFC = 0
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp# fcdutil /dev/fcd5 npiv_info
PFC Hardware Path = 0/0/0/5/0/0/1
PFC DSF = /dev/fcd5
PFC Class Instance = 5
PFC Driver state = ONLINE
PFC Port WWN = 0x50014380266595fa
PFC Node WWN = 0x50014380266595fb
PFC Switch Port WWN = 0x20440027f8e7490c
PFC Switch Node WWN = 0x10000027f8e7490c
FlexFC Virtual Fibre Channel (VFC)
----------------------------------
Maximum Supported FlexFC VFC = 16
Number Active FlexFC VFC = 0
HPVM Virtual Fibre Channel (VFC)
----------------------------------
Maximum Supported HPVM VFC = 48
Number Active HPVM VFC = 0
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#
root@jcyxfam2:/tmp#