 These computers ran Digital's OpenVMS operating system.They were designed in parallel with the DEC 7000 AXP and DEC 10000 AXP server computers, and were identical except for the CPU modules used and the supported I/O bus interfaces.Digital intended customers of the VAX 7000/10000 to eventually upgrade to the Alpha-based configuration (DEC 7000/10000 AXP) by simply swapping the VAX-based CPU module(s) for those based on the Alpha.