Mass Storage Device (MSD)
Definition - What does Mass Storage Device (MSD) mean?
A mass storage device (MSD) is any storage device that makes it possible to store and port large amounts of data across computers, servers and within an IT environment. MSDs are portable storage media that provide a storage interface that can be both internal and external to the computer.
A mass storage device may also be referred to as an auxiliary storage device. The term is commonly used to describe USB mass storage devices.