StorageTek L700 Service Manual page 346

Glossary
operating system for the LSM. (2) The central
module of an operating system. It is the part
of the operating system that loads first, and it
remains in main memory. (3) The essential
part of UNIX or other operating systems,
responsible for resource allocation, low-level
hardware interfaces, and security (4) An
essential subset of a programming language,
in terms of which other constructs are (or
could be) defined. Also known as a core
language.
L
lb An abbreviation for pound.
library name An assigned name that maps
to the Internet Protocol (IP) address for a
library. See also Ethernet address, Internet
Protocol (IP) address, subnet mask.
Linear Tape-Open (LTO) (1) A technology
developed jointly by HP, IBM, and Seagate
for new tape storage options. LTO
technology is an open format, which means
that users have multiple sources of products
and media. The open nature of LTO
technology also provides a means of
enabling compatibility between different
vendors' offerings. (2) An open specification
for tape storage devices.
M
magazine (1) A container that holds
cartridges in the cells provided and is
inserted into the CAP. (2) A removable
container that holds cartridges and is placed
into the cartridge access port (CAP).
machine activated routing switch
(MARS) An electronic switching mechanism
built by Giltronix that either the Customer
Service Remote Center or the machine can
activate to select a port for communications.
manual mode (1) A relationship between a
library and all attached hosts. Libraries
operating in manual mode are placed offline
Glossary-6
to and do not communicate with all host
central processing units and require human
assistance to perform cartridge operations.
(2) A relationship between a library and the
client. A library operating in manual mode
does not communicate with the client and
requires human assistance to perform
cartridge operations. Manual mode occurs
when the robot is unavailable to the client.
(3) A library operating mode in which all
clients are placed offline and requires human
intervention to perform cartridge load and
unload operations. (4) A relationship
between a library and all attached clients.
Tape libraries operating in manual mode
have been placed offline to all client CPUs
and require human assistance to perform
cartridge operations.
master (PTP) The library that powers the
pass-thru port.
media format Format of data written on
tape (36-track, compressed, and so on).
micro (µ) A prefix that means one one-
millionth (10
microcode (1) A code, representing the
instruction of an instruction set, that is
implemented in a part of storage that is not
program-addressable. (IBM) (2) The lowest-
level of instruction that directly controls a
microprocessor. See also firmware.
Mode Select command The command
used in Fibre Channel that specifies
operational parameters and options for a
logical unit. The Mode Select command
shows the fields to be changed and the
default values for these fields.
Mode Sense command The command used
in Fibre Channel that returns the current
operating modes and parameters of a device
to the host. The Mode Sense command also
returns the default parameters or information
in which fields and bits can be changed using
the Mode Select command.
Fourteenth Edition
StorageTek Proprietary
-6
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95846