IBM Magstar 3570B, 1/2?, 5GB Tapes IBM 3570 tapes bring reliable performance saving time and increasing productivity. With an industry-leading design that enables exceptionally fast data access, IBM 3570 Magstar MP tape cartridges can be used as an alternative to direct access storage for some types of near-online applications that require high performance data access. The IBM 3570 offers 5 GB of native space making it a great solution for mid-range server and storage-networked environments. To facilitate fast data access, the 3570 tape cartridge by IBM contains two tape spools with the tape positioned at its midpoint. Because of this design, the system, on average, has to search only one quarter the length of a tape to access data-significantly reducing search times.