Appendix A Glossary of Terms and Acronyms
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Release 4.5, Revision 2
LCU Library Control Unit
LFS A DCE Local File System, which is a high performance log-based file
system that supports the use of access control lists and multiple filesets
within a single aggregate.
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.
local mount point Thename of a directory in a Unix file system where a DFS fileset has been
mounted.
location server An HPSS server that is used to help clients locate the appropriate Bitfile
Server, Name 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 The records received and maintained in a central log by the HPSS Log
Daemon.
log record type Anindicator of whether a message to be logged is an alarm, event, status,
debug, request, security, or accounting record.
logging service AnHPSSinfrastructure service consisting of a central Log Daemon, one or
more Log Clients, and server-specific logging policies.
LRU Least Recently Used
LS Location Server
LTO Limited Tape Open
MAC Mandatory Access Control
managed object A programming data structure that represents an HPSS system resource.
The resource can be monitored and controlled by operations on the
managed object. Managed objects in HPSS are used to represent servers,
drives, storage media, jobs, and other resources.
MB Megabyte (220)
metadata Control information about the data stored under HPSS, such as location,
access times, permissions, and storage policies.