Definitions for "Simple volume"
A volume that consists of contiguous space on a single disk. You can extend a simple volume within the same disk or onto additional disks. If you extend a simple volume across multiple disks or across noncontiguous areas on the same disk, it becomes a spanned volume. You can create simple volumes only on dynamic disks. Simple volumes are not fault tolerant but can be mirrored. When a basic disk with a partition is upgraded, the partition becomes a simple volume. An extended partition on a basic disk also becomes a simple volume when the disk is upgraded to dynamic. See also Dynamic disk, Dynamic volume, Fault tolerance, Spanned volume.
a portion of a physical disk that functions as though it were a physically separate unit
a standard disk volume