3480 IDRC
In 1986, IBM added a hardware-based data compression option: Improved Data Recording Capability (IDRC). A 3480 tape drive with IDRC could record up to 400 megabytes on a single tape. The 3480 IDRC format is also commonly known as the 3490 recording format.
A 3480 tape drive with IDRC uses the same data cartridges as a standard 3480 tape drive. It can read and write standard 3480 tapes.
Read more about this topic: IBM 3480 Family