WWNN和WWPN的相关概念以及AIX、HPUX上的查询(原创)
WWN是HBA卡用的编号，每一个光纤通道设备都有一个唯一的标识，称为WWN（world wide name），由IEEE负责分配。在有多台主机使用磁盘阵列时，通过WWN号来确定哪台主机正在使用指定的LUN（或者说是逻辑驱动器），被使用的LUN其他主机将无法使用。
WWN概念包含WWPN、WWNN。
一个不可拆分的独立的设备有WWNN，一个端口有WWPN。
比如一台SAN交换机，不可拆分，有一个WWNN，它有一堆端口，每个端口有一个WWPN。一块多口光纤HBA，卡本身有一个WWNN，每个端口有一个WWPN，单口的HBA也是，不过只有一个WWNN和一个WWPN。但主机就没有WWNN，因为卡和主机是可以分离的，单纯一个主机本身并不一定是SAN环境中的设备。
有WWNN的好处是：即使不去看连线，也可以清楚地知道，哪些端口是在一个物理设备上
wwn：有两种表示方法：? wwpn? wwnn
对于主机来说：
单个hba卡（单口）的情况下： wwnn只有一个???? wwpn和wwnn一样
单个hba卡（双口）的情况下： wwnn只有一个???? wwpn有两个
两个hba卡（单口）的情况下： wwnn有两个??? ? ? wwpn有两个
两个hba卡（双口）的情况下： wwnn有两个?? ?? ? wwpn有四个
AIX上WWPN的查询
查看HBA卡具体在哪个插槽上
#lsslot -c pci|grep fc
U787B.001.DNW7603-P1-C4 PCI-X capable, 64 bit, 133MHz slot fcs0
U787B.001.DNW7603-P1-C5 PCI-X capable, 64 bit, 133MHz slot fcs1
HBA卡的物理位置 U787B.001.DNW7603-P1-C4 可以看机器盖板上的图,也可以去查阅 IBM 系统硬件信息中心.
通过lsdev获取系统中识别有几块HBA卡；
# lsdev -C | grep fcs
fcs0?????? Available 00-08???????? FC Adapter
fcs1?????? Available 05-08???????? FC Adapter
即有两块HBA卡，对应的AIX系统中为fcs0，fcs1；
再使用lscfg命令获取各个HBA卡属性；
# lscfg -vl fcs0
? fcs0???????????? U787B.001.DNWGXVH-P1-C3-T1? FC Adapter
??????? Part Number.................46K6838
??????? Serial Number...............1B83504003
??????? Manufacturer................001B
??????? EC Level....................A
??????? Customer Card ID Number.....280D
??????? FRU Number.................. 46K6838
??????? Device Specific.(ZM)........3
??????? Network Address.............10000000C97E5FFA? WWPN
??????? ROS Level and ID............02C82774
??????? Device Specific.(Z0)........1036406D
??????? Device Specific.(Z1)........00000000
??????? Device Specific.(Z2)........00000000
??????? Device Specific.(Z3)........03000909
??????? Device Specific.(Z4)........FFC01231
??????? Device Specific.(Z5)........02C82774
??????? Device Specific.(Z6)........06C32715
??????? Device Specific.(Z7)........07C32774
??????? Device Specific.(Z8)........20000000C97E5FFA
??????? Device Specific.(Z9)........BS2.71X4
??????? Device Specific.(ZA)........B1D2.70A5
??????? Device Specific.(ZB)........B2D2.71X4
??????? Device Specific.(ZC)........00000000
??????? Hardware Location Code......U787B.001.DNWGXVH-P1-C3-T1
HPUX上的WWNN和WWPN查询
#ioscan -fnC fc
Class???? I? H/W Path??? Driver S/W State?? H/W Type???? Description
===================================================================
fc??????? 2? 0/0/2/1/0?? fcd? CLAIMED???? INTERFACE??? HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
??????????????????????? /dev/fcd2
fc??????? 3? 0/0/4/1/0?? fcd? CLAIMED???? INTERFACE??? HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)
??????????????????????? /dev/fcd3
fc??????? 0? 0/0/12/1/0? td?? CLAIMED???? INTERFACE??? HP Tachyon XL2 Fibre Channel Mass Storage Adapter
??????????????????????? /dev/td0
用fcmsutil显示WWN号码
#fcmsutil /dev/fcd2
?????????????????????????? Vendor ID is = 0x001077
?????????????????????????? Device ID is = 0x002422
??????????? PCI Sub-system Vendor ID is = 0x00103c
?????????????????? PCI Sub-system ID is = 0x0012d6
?????????????????????????????? PCI Mode = PCI-X 133 MHz
?????????????????????? ISP Code version = 4.0.22
?????????????????????? ISP Chip version = 3
?????????????????????????????? Topology = PTTOPT_FABRIC
???????????????????????????? Link Speed = 2Gb
???????????????????? Local N_Port_id is = 0x621213
????????????????? Previous N_Port_id is = None
??????????? N_Port Node World Wide Name = 0x500143800131155b? #本机HAB卡的WWNN
??????????? N_Port Port World Wide Name = 0x500143800131155a??? #本机HBA卡的WWPN
??????????? Switch Port World Wide Name = 0x2012080088a0ae1a?? #HBA卡连接光纤交换机的WWPN
??????????? Switch Node World Wide Name = 0x1000080088a0ae1a #HBA卡连接光纤交换机的WWNN
?????????????????????????? Driver state = ONLINE
?????????????????????? Hardware Path is = 0/0/2/1/0
???????????????????? Maximum Frame. Size = 2048
???????? Driver-Firmware Dump Available = NO
???????? Driver-Firmware Dump Timestamp = N/A
???????????????????????? Driver Version = @(#) libfcd.a HP Fibre Channel ISP 23xx & 24xx Driver B.11.23.06 /ux/core/isu/FCD/kern/src/common/wsio/fcd_init.c:Jun 23 2006,14:05:23
?
参考至:http://blog.itpub.net/post/3232/504272
????????? http://space.itpub.net/14136300/viewspace-659626
????????? http://blog.csdn.net/xiaolantian/article/details/4934906
????????? http://publib.boulder.ibm.com/infocenter/svc/ic/index.jsp?topic=/com.ibm.storage.svc.console.doc/svc_aixlocwwpn_1dcvtx.html
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