you should have either PowerPath or MPIO ..not both.

Sorry, I meant should I remove MPIO first ?

Thanks

I understand, but I did the same on previous versions of AIX and PP and it took Powerpath by default without removing Mpio.

Do you mean that I should remove PP first ? I don't know if you or someone else did that and how ?

Regards

I don’t think it matters

also take a look at this solution: emc207898

from ODM  README file

CLARiiON Support:

----------------

Only one of the following EMC CLARiiON FCP filesets can be installed at

any specific time. (e.g) EMC CLARiiON FCP MPIO Support Software can't be

installed when EMC CLARiiON FCP Support Software is installed.

EMC CLARiiON FCP Support Software; IBM Fibre Channel driver support.

EMC CLARiiON FCP MPIO Support Software; IBM default PCM MPIO support.