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 |
LRU | Least Recently Used |
HPSS Installation Guide | July 2008 |
Release 6.2 (Revision 2.0) | 249 |
