Internal Magnetic Media 343Internal Magnetic Mediacompressed with a data transfer rate of 1.5 MB/s (native) and 3 MB/s (with compression)using a 1200-foot cartridge tape.Tape tensioning control improvements in the tape unit eliminate the need for anauto-retension pass during the data cartridge load sequence. This is a major time saver sincethe auto-retension pass on earlier QIC tape units can take up to five minutes. The #6485Tape Unit retensions the data cartridge only when a loss of tension is detected. For typicaloperating conditions, this is infrequent.It may be used for save/restore, Alternate IPL, program distribution, migration, and QIC tapeexchange.However, the tape compression used by the #6381/#6481 2.5 GB and#4482/#4582/#6382/#6482 4 GB tape drives is not compatible with the compaction on the#6385/#6485 13 GB. Uncompacted or uncompressed tapes are compatible within eachdevice’s format limitations.This tape is not compatible with System/36 tape units. For read and write compatibility, referto internal tape read/write compatibilities table on page 339.16 GB ¼-Inch Internal Cartridge Tape Unit TechnologyThis tape can be used for save/restore, Alternate IPL, program distribution, migration, and¼-inch cartridge tape exchange. Backward read/write capability to the previous MLR1-S(Fjord) format and backward read capability to the last three QIC (Fjeld) formats protects thecustomer's investment in QIC technology.It provides 16 GB capacity native and 32 GB capacity compressed with a data transfer rate of1.5 MB/s (native) and 3 MB/s (with compression) using a 1500-foot cartridge tape.It also is capable of 13 GB capacity native and 26 GB capacity compressed with a datatransfer rate of 1.5 MB/s (native) and 3 MB/s (with compression) using a 1200-foot cartridgetape.However, the tape compression used by the #6381/#6481 2.5 GB and#4482/#4582/#6382/#6482 4 GB tape drives is not compatible with the compaction on the#4483/#4583/#6383/#6483 16 GB. The #6385/#6485 uncompacted or uncompressed tapesare compatible within each device’s format limitations.This tape is not compatible with System/36 tape units. For read and write compatibility, referto internal tape read/write compatibilities table on page 339.
