Virtual Tape System (VTS)
Definition - What does Virtual Tape System (VTS) mean?
A virtual tape system combines the functionality of disk cache and a virtual tape library to deliver a data storage and backup solution that can be accessed over the Internet or through an IP network.
A virtual tape system may also be referred to as a virtual tape server.
Techopedia explains Virtual Tape System (VTS)
VTS eliminates data retrieval latency by storing an instance of frequently used programs in disk caches to provide faster access to the data. VTS also uses a virtual tape library (VTL) built over storage virtualization to reduce the amount of tape disk required.