Glossary 537
IODF The data set that contains the S/390 or
zSeries I/O configuration definition file produced
during the definition of the S/390 or zSeries I/O
configuration by HCD. Used as a source for IPL,
IOCP, and Dynamic I/O Reconfiguration.
IP Internet Protocol.
IPI Intelligent Peripheral Interface.
IPL See initial program load.
ISL See inter-switch link.
isochronous transmission Data transmission
that supports network-wide timing requirements. A
typical application for isochronous transmission is a
broadcast environment that needs information to be
delivered at a predictable time.
JBOD Just a bunch of disks.
jukebox A device that holds multiple optical disks
and one or more disk drives, and can swap disks in
and out of the drive as needed. ...