IBM 3590 manual Loader. See cartridge loader

status at initial status time if the command is accepted and channel command retry is not requested.

immediate mode. In tape-write-immediate mode, channel end and device end are presented separately.

implicitly activated. A process in which the attributes of an identifier are determined by default. Contrast with explicitly activated.

index. A function performed by the cartridge loader that moves cartridges down the input or output stack one cartridge position. A loader can perform multiple consecutive indexes.

initiator. A SCSI device that requests an I/O process to be performed by another SCSI device (a target). In many cases, an initiator can also be a target.

input/output channel. In a data-processing system, a functional unit, controlled by the processing unit, that handles the transfer of data between main storage and peripheral equipment.

install. To set up for use or service. The act of adding a product, feature, or function to a system or device either by a singular change or by the addition of multiple components or devices.

interchange application. The preparation of tapes for use on other systems or devices, either local or remote, or the use of tape data prepared by another system.

interposer. An interposer is a part used to convert a 68-pin connector to a 50-pin D-shell connector.

invoke. To petition for help or support. The request for a feature or function to be utilized in future processing activities through the use of software or hardware commands.

J

journaling. Recording transactions against a dataset so that the dataset can be reconstructed

by applying transactions in the journal against a previous version of the dataset.

K

KB. Kilobyte; 1 024 bytes of storage.

L

LED. Common abbreviation for Light Emitting Diode.

loader. See cartridge loader.

load point. The beginning of the recording area on magnetic tape.

logical end of tape. A point on the tape where written data normally ends.

LSB. Least significant bit.

long wave. A Fibre Channel cable that has a 1400 nm wave length.

LUN. Logical unit number.

M

MB. Megabyte; 1 048 576 bytes of storage.

magnetic recording. A technique of storing data by selectively magnetizing portions of a magnetizable material.

magnetic tape. A tape with a magnetizable surface layer on which data can be stored by magnetic recording.

magnetic tape drive. A mechanism for moving magnetic tape and controlling its movement.

manual mode. A mode of operation that can be selected on the cartridge loader. This mode allows a single tape cartridge feed, performed by the operator.

media capacity. The amount of data that can be contained on storage media and expressed in bytes of data.

1363590 Operator Guide