HP-UX System Administrator's Guide: Overview

Event
Management
Daemon
Part of the Event Manager subsystem, the event management daemon (/usr/sbin/evmd)
provides posting and notification services for system and application clients running on the local
system.
See also Event Manager (EVM) and the evmd1M manpage.
Event
Manager
(EVM)
An HP-UX subsystem that provides a mechanism for the posting and retreiving of events.
See also events and the evm5 manpage.
extended
campus
cluster
See extended distance cluster.
extended
distance
cluster
A cluster with alternate nodes located in different data centers separated by some distance.
Extended distance clusters are connected using a high speed cable that guarantees network access
between the nodes as long as all guidelines for disaster tolerant architecture are followed. The
maximum distance between nodes in an extended distance cluster is set by the limits of the data
replication technology and networking limits.
extent A fixed size chunk of disk space used by the Logical Volume Manager to allocate space in a
volume group. Logical volumes are managed as a collection of extents and extents are the unit
of measure by which logical volumes are created or resized.
file system A disk based mechanism – residing in a disk partition, logical volume, or on optical media – used
for organizing files, directories, links, and occasionally for paging operations. In HP-UX, file
systems are hierarchical and can be joined via the mount process (see mount(1M)) to form larger
directory hierarchies.
file system
swap
Swap space that resides within a file system. File system swap is slower than device swap because
the file system is required to allocate the space in order to prevent files from being overwritten.
This adds an extra layer of access that the kernel must traverse to write or read paged out memory.
See also device swap and pseudo swap.
fine-grained
privilege
A permission to perform a specific, low-level operation (for example, permission to execute a
specific system call).
FTP Stands for File Transfer Protocol. A method for transferring files over a computer network from
one computer (a server) to another (a client). FTP also enables limited file operations (for example
directory listings) on the remote computer. The two computers involved are a server and a client.
• FTP Server – listens on the network for connection requests from clients.
• FTP Client – initiates the connection to an FTP server and enables the user to transfer files
and perform other file manipulation tasks on the server.
guest
operating
system
See Integrity VM guest.
hard partition See nPartitions.
hardware
partitioning
See nPartitions.
hardware
threading
A hardware technique used in Itanium processors to enhance the computational performance of
a core. Itanium processors are those used in HP Integrity Servers.
high
availability
cluster
A group of servers functioning in a coordinated fashion to create a configuration that allows
application services to continue in spite of a hardware or software failure.
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