VM and VMS
VM or VMS may refer to any of the following:
1. VM is an acronym for voicemail and VMS is short for voicemail system.
2. VM is an acronym for virtual machine.
3. VM is an acronym for virtual memory.
4. Short for virtual memory systems, VMS was introduced in 1979. It is a multi-user, multitasking operating system developed by Digital Equipment Corporation that runs on DEC's VAX and Alpha lines of computers.