Ah, an 'easy' question.

The disks arent switched, only the name= part of an ODM record. Basically, you probably have adapters in different slots, or the cabling is different. What has happened is during 'discovery' by the configuration manager (cfgmgr) the disks are seen in a different order.

For HACMP this means nothing, as HACMP uses the VGID and PVID to locate objects. However, it does make documentation difficult.

As the volume groups are concurrent, offline the volumn group on one of the nodes, do rmdev -dl hdisk{1,2,3}, and run cfgmgr again. If they are still 'wrong', you will need to look at the wiring/position of the disk adapters to get them the same.

There are also ways to do this manually, but I don't recommend that. More documentation most people would not understand.