AIX 5.3 连接EMC CX4-480 问题请教
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-L0EMC 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
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.
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