资料来源 : Free On-Line Dictionary of Computing

Virtual Device Location
     
        (Or "Virtual Address") The address of a device (e.g. disk,
        printer, terminal) belonging to a "guest" {operating system}.
        Such an address is mapped to a physical device.  VM may remap
        several virtual disks to different parts of a single physical
        disk.
     
        (1995-02-22)