Hello,
well I haven't run CMOD on more than 1 Object Server with a Library server in 2 separated servers.
From what I know, is that each object server must be defined in a Storage Set. And this storage set must be given to an application group.
Meaning, that if you want to choose to which Object server you data will go, you need to choose the correct Application Group with the correct Storage Set pointing to the Object Server you need.
So no option for arsload, but merely a Datamodel concept to have.
I might be wrong, but I don't see other way to do it...
Maybe with arsadmin, but I'm not proficient in that tool for that kind of enhanced thing...
Cheers,
Alessandro