> Tha last z/VM that would run on that box was 2.4 or perhaps 3.1, neither > of which IBM still sells.
For a MP3000, z/VM 4.4. It was a G5 machine if you had up to date ucode. The P390 only ran up to ESA 2.4, unless you had the PCI version, which would run 3.1 (very, very slowly).