NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-62
low-level link
low-level link. A connection between the OSM or TSM client software running on a system
console and the master service processors (MSPs) on an HP NonStop™ S-series
server. When the HP NonStop operating system is not running, communication must
take place over a low-level link. You can also communicate with a NonStop S-series
server over a low-level link when the operating system is running. See also service
connection.
low PIN. A process identification number (PIN) that is in the range 0 through 254. Contrast
with high PIN.
LUN. See logical unit number (LUN).
MAC address. See media access control (MAC) address.
MAF. See missed address file (MAF).
main bonding jumper. The connection between the grounded circuit conductor and the
equipment grounding conductor at the service.
main memory. Data storage, specifically the chips that store the programs and data
currently in use by a processor.
main service entrance. The enclosure containing connection panels and switchgear,
located at the point where the utility power lines enter the building.
maintenance entity. A processing entity in a single HP NonStop™ system that collects
state information, environmental information, and failure data about the system
resource or resources for which the maintenance entity is responsible. A maintenance
entity can include both physical and software components, and a system can contain
multiple maintenance entities. For example, each I/O adapter module (IOAM) has its
own maintenance entity.
Maintenance Interface. See Archive and Database Maintenance Interface.
maintenance switch. The Ethernet switch that links the maintenance entities in various
modular components to the HP NonStop™ Open System Management (OSM)
Interface.
management process. A process through which an application issues commands to a
subsystem. A management process can be part of a subsystem, or it can be
associated with more than one subsystem. In the latter case, the management process
is logically part of each subsystem. Subsystem Control Point (SCP) is the management
process for all subsystems controlled by Subsystem Control Facility (SCF).
manager. (1) For an HP NonStop™ system, the person responsible for day-to-day
monitoring and maintenance tasks associated with a software subsystem on an
Expand node. (2) For a UNIX system, any person in Management and Information
Services management for the site.