Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive

A magnetic tape cartridge comprising:

• a magnetic tape on which a plurality of servo bands are formed;
• and
• a storage medium that is integrated with or separated from the magnetic tape,
• wherein the plurality of servo bands are formed at positions spaced apart from each other in a width direction of the magnetic tape along an entire length direction of the magnetic tape, and
• the storage medium has a pre-prepared area for storing information corresponding to a pitch in the width direction between the plurality of servo bands;
• and
• wherein the information is derived from a distance between a plurality of servo reading elements for reading the plurality of servo bands, and a pitch in the width direction between the plurality of servo bands that have been read by the plurality of servo reading elements.