HP NonStop G-Series - Manual (Page 117)

5157/5157 ACL S-Series DLT Subsystems Installation Users Guide
Operating the 5157 ACL Tape Drive 6-28
Figure 6-22 Tape Magazine with Cartridges Installed
6.19 Tape Requirements
The 5157 ACL uses ECMA-approved and ANSI proposed-
standard DLTtape

cartridges. The DLTtape

cartridge is a four
inch square plastic cartridge. According to the media manufacturer,
the cartridge and the medium are designed to withstand 1,000,000
passes and have a shelf life of 30 years or more when properly
stored.
The 5157 ACL uses DLTtape

IV cartridges, which contain 1800
feet of tape. The non-compressed capacity of DLTtape

IV in an
5157 ACL is 35 GB.
Under average conditions of data compression, these capacities may
be multiplied by two when compression is used.