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
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