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Glossary 659
1st ed., 6/30/04 - 312579601
ECCST— (1) A value that can be specified on the
MEDia parameter and that includes only enhanced
capacity cartridge system tapes. (2) An alias of
ECART. (3) See Enhanced Capacity Cartridge
System Tape.
EDL— See eligible device list.
EDTGEN— Eligible Device Table Generation. A
process used to replace an installation-defined and
named representation of the devices that are eligible
for allocation.
EETape— See Extended Enhanced Tape.
Effective Recording Density— The number of user
bytes per unit of length of the recording medium.
eject— The process where the LSM robot places a
cartridge in a Cartridge Access Port (CAP) so the
operator can remove it from the LSM.
eligible device list— (1) A group of transports that
are available to satisfy an allocation request. (2) For
JES2 and JES3, a list of devices representing the
UNIT parameter specified by way of invoking JCL.
The EDL can contain both library and nonlibrary
transports depending on the I/O GEN.
enable— The modification of system, control unit,
or device action through the change of a software
module or a hardware switch (circuit jumper)
position.
enhanced CAP (ECAP)— An enhanced CAP
contains two forty-cell magazine-style CAPs and a
one-cell priority CAP (PCAP). Each forty-cell CAP
holds four removable magazines of ten cells each. An
LSM access door with an enhanced CAP contains no
cell locations for storing cartridges.
See also Cartridge Access Port, standard CAP,
priority CAP, WolfCreek CAP, WolfCreek optional
CAP, or TimberWolf CAP.
Enhanced Capacity Cartridge System Tape—
Cartridge system tape with increased capacity that
can be used with 4490 and 9490 Cartridge Drives.
These tapes are visually identified by a two-tone
(black and tan) housing.
EOF— End-of-File.
EOT— End-of-Tape marker.
EPO— Emergency Power Off.
EREP— Environmental Recording, Editing,
Printing.
ERP— See error recovery procedures.
error recovery procedures (ERP)— Procedures
designed to help isolate and, where possible, to
recover from errors in equipment.
esoteric— A user-defined name that groups devices
into classes.
ETAPE— (1) A value that can be specified on the
MEDia parameter and that includes only enhanced
capacity cartridge system tapes. (2) An alias of
ECART. (3) See Enhanced Capacity Cartridge
System Tape.
Extended Capacity Tape— See Enhanced Capacity
Cartridge System Tape.
Extended Enhanced Tape (EETape)— A synonym
for a ZCART, which is a cartridge that can only be
used with a 9490EE drive. An EETape (ZCART)
provides greater storage capacity than an ECART.
ExtendedStore Library— One or more LSMs with
no Cartridge Drives (CDs) that are attached by
pass-thru ports to other LSMs (with CDs) in an ACS.
These LSMs provide archive storage for cartridges
containing less active data sets. Cartridges can be
entered and ejected directly into and out of this LSM
though either a standard CAP or an enhanced CAP.
F
FIFO— First in, first out.
file protected— Pertaining to a tape volume from
which data can be read only. Data cannot be written
on or erased from the tape.
format— The arrangement or layout of data on a
data medium.