John M Taylor commented on Jun 8, 2011

Re: Managing 64-bit memory in IBM Lotus Domino 8.x

Why on earth have you omitted IBM's premier OS platform for Domino - IBM i (formerly i5/OS)? Is this because you are regarding it as 128-bit? This is architecturally true but it runs in 64-bit mode on the same Power servers as AIX. It has significant extra function, such as multi-versioning, that I believe neither AIX nor Windows offer and should be the OS of choice on Power.