Quantum LTO-9 Ultrium data cartridges, sequentially numbered, are available in a library pack of 20 units (MPN MR-L9MQN-BC, SKU 21321801, EAN 0768268045958). Each LTO-9 cartridge offers 18 TB of native capacity (45 TB compressed at a 2.5:1 ratio), with native transfer speeds of up to 400 MB/s (up to 1,000 MB/s compressed). Features include hardware encryption, WORM, and LTFS support. Packaged and numbered for library tape use; available in a 20-piece set. Ideal for backup, archiving, long-term retention, and offline/air-gapped storage.