By the letter of the law, in the IPOSS offer def, you should have IPOSS on an IP500, as well as the server running VM Pro... Has not been enforced, but i am hearing form other engineers that they are starting to do so now.
Also, i let my ACSS lapse, they wouldn't let me open a ticket... Seems they are starting to enforce some of the policies been in place, but not enforced to date...