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I/O
Input/Output
IOD/IOR
Input/Output Descriptor / Input/Output Reply. Structures used to send control
information about data movement requests in HPSS and about the success or
failure of the requests.
IP
Internet Protocol
IRIX
SGI’s implementation of UNIX
junction
A mount point for an HPSS fileset.
KB
Kilobyte (210)
LAN
Local Area Network
LANL
Los Alamos National Laboratory
LARC
Langley Research Center
latency
For tape media, the average time in seconds between the start of a read or
write request and the time when the drive actually begins reading or writing
the tape.
LCU
Library Control Unit
LDAP
Lightweight Directory Access Protocol
LLNL
Lawrence Livermore National Laboratory
LMCP
Library Manager Control Point
LMU
Library Management Unit
local log
An optional circular log maintained by a Log Client. The central log contains
formatted messages from all enabled HPSS servers residing on the same node
as the Log Client.
Location Server
An HPSS server that is used to help clients locate the appropriate Core Server
and/or other HPSS server to use for a particular request.
Log Client
An HPSS server executing on each HPSS node that is responsible for sending
log messages to the local log, to the Log Daemon for central logging, and to
SSM to display messages in the Alarm and Event window.
Log Daemon
An HPSS server responsible for writing log messages to the central log.
log record
A record received and maintained in a central log by the HPSS Log Daemon.
log record type
An indicator of whether a message to be logged is an alarm, event, status,
debug, request, security, or accounting record.
logging service
An HPSS infrastructure service consisting of a central Log Daemon, one or
more Log Clients, and server-specific logging policies.
LRU
Least Recently Used
HPSS Installation Guide July 2008
Release 6.2 (Revision 2.0) 249