thanks for your helpful replies,
I think as long as the sap kernel is supported for 7.1 with the latest patches, there should be no problem with the upgrade to 7.1, but I have to test this of course, and check with IBM
theoretically we have a strict vg separation, BUT I'm sure in real, there are some files here an there in rootvg filesystems.. lets see
what do you think about Power HA 7.1, when upgrading to AIX 7.1, my thought was to also update the Cluster sw to 7.1
I'll keep you updated in this thread about the progress, I'll start in about two weeks with the first test systems
cheers