HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

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.
HP Insight
Dynamics–VSE
Software for HP Integrity servers that allows you to quickly adjust to dynamic business demands.
Using this software you can provision your infrastructure with automated activations of servers,
storage, and networking; optimize that infrastructure with built-in capacity planning and
rebalancing tools, and protect continuity of services with automated failover. For additional
information on HP Insight Dynamics - VSE see http://www.hp.com/go/insightdynamicsvse.
HP SMH (System
Management
Homepage)
The primary single system administration tool beginning with HP-UX 11i version 3. HP SMH
supports HP-UX, HP supported versions of Linux, and Microsoft Windows operating systems.
iCAP (Instant Capacity) A group of technologies that allow you to activate/deactivate pre-purchased
“stand-by” hardware components, paying only for the computing resources you actually
consume. This allows you to handle temporary usage demands more cost efficiently.
iCAP components Components (for example, processing cores and memory), purchased at a reduced price, but
without usage rights. These components can be activated when needed by purchasing either
temporary or permanent usage rights.
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