AIX 5.3 连接EMC CX4-480 问题请教

jtp540

环境：AIX 5.3、EMC CX4-480、EMC CLARiiON ODM 5.3.0.3
问题：两种不同的failovermode，对应的同一LUN设备类型的VPD信息有很大差异！请问为什么?
failovermode 1
# lscfg -vpl hdisk46
  hdisk46          U787F.001.DPM5NPK-P1-C4-T1-W5006016944601255-L0 EMC CLARiiON FCP RAID 5 Disk
       Manufacturer................DGC     
        Machine Type and Model......RAID 5         
        ROS Level and ID............0429
        Serial Number...............FCNCX093600061
        Device Specific.(SI)........CX4-480        
        Device Specific.(PQ)........00
        Device Specific.(VS)........670000606ACL
        Device Specific.(UI)........600601600EA02500544D79BEE526E111
        Device Specific.(FL)........0067
        Device Specific.(Z0)........10
        Device Specific.(Z1)........10

  PLATFORM SPECIFIC
  Name:  disk
    Node:  disk
    Device Type:  block


failovermode 2
lscfg -vpl hdisk46
  hdisk46         U787F.001.DPM5NPK-P1-C4-T1-W5006016944601255-L0  EMC CLARiiON FCP RAID 5 Disk
       Manufacturer................DGC     
        Machine Type and Model......RAID 5         
        ROS Level and ID............0429
        Device Specific.(PQ)........00
        Device Specific.(VS)........670000606ACL

  PLATFORM SPECIFIC
  Name:  disk
    Node:  disk
    Device Type:  block

phanx

不同的failover方式有不同的用途。

Host-Connectivity-Guide-for-IBM-AIX 上给出的规则是：

Failovermode should be set according to your configurations:
– Set to 1 for PowerPath non-NDU configurations.
– Set to 1 for MPIO configurations, NDU configurations.
– Set to 1 for Veritas DMP configurations (requires VxVM
5.0.1.3 and later).
– Set to 2 for Veritas DMP configurations requires VxVM
5.0.1.2 and earlier).
– Set to 3 for PowerPath, NDU configurations.
– Set to 4 for PowerPath, MPIO ALUA configurations, NDU
configurations.