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Improved Data Recording Format
An improved data recording mode that can increase the effective data capacity and the effective data
rate when enabled and started.
initial microprogram load (IML)
The action of loading a microprogram from an external storage to writable control storage.
initiator
The component that runs a command. The initiator can be the host system or the tape controller.
INST
Installation.
interblock gap (IBG)
An area on a data medium to indicate the end of a block or physical record.
interface
A shared boundary. An interface might be a hardware component to link two devices or it might be a
portion of storage or registers accessed by two or more computer programs.
interposer
The part that is used to convert a 68-pin connector to a 50-pin D-shell connector, for example.
intervention required
Manual action is needed.
INTRO
Introduction.
I/O
Input/output.
IOP
Input/output processor.
IPL
Initial program load.
Synonymous with IML.
IPP
IBM method of passing keys.
iSystem
Deprecated IBM term for AS/400 (System i) products, which were formerly known as iSeries products.
IT
Impedance transformer.
Information technology.
ITST
Idle-time self-test.
K
KB
Kilobytes.
kilo
Prefix for 'thousand' (10
kilobytes (KB)
One thousand bytes.
L
LAN
Local area network.
In a comparison of geographic breadth, a LAN is a computer network that is smaller than a MAN or a
WAN.
308 IBM 3592 TS1140, TS1150, TS1155, and TS1160 Tape Drives: Maintenance Information
3
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