Glossary
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SO-DIMM: Small Outline Dual In-line Memory
Module
Smaller alternative to a DIMM, being roughly half
the size of regular DIMMs
SSD: Solid State Drive
It is a data storage device that uses solid-state
memory to store persistent data.
SSH: Secured Shell
SSH is a network protocol that allows data to be
exchanged using a secure channel between two
networked devices.
SSL: Secure Socket Layer
They are cryptographic protocols that provide
security and data integrity for communications over
networks such as the Internet
T
TELNET: Telecommunication network
Telnet is a network protocol used on the Internet or
local area networks to provide a bidirectional
interactive communications facility.
U
UCM: Ultra Capacitor Module
The module can ride through AC outages of max.
250ms.
UID: Unit Identifier
Unsigned integer value that identify users within the
Linux kernel.
UPS: Uninterrupted Power Supply
Supplying power from a separate source when
utility power is not available.
URL: Uniform Resource Locator
The address of a file (resource) accessible on the
Internet.
USB: Universal Serial Bus
A plug-and-play interface between a computer and
add-on device. The USB interface allows a new
device to be added to your computer without
having to add an adapter card or even having to
turn the computer off.
UTC: Coordinated Universal Time
A time standard based on International Atomic
Time (TAI) with leap seconds added at irregular
intervals to compensate for the Earth's slowing
rotation.
V
VLAN: Virtual Local Area Network
A local area network with a definition that maps
workstations on some other basis than geographic
location (for example, by department, type of user,
or primary application).
VT-d: Virtualization for Directed I/O
The VT-d architecture enables system software to
assign one or more I/O devices to a protection
domain. DMA isolation is achieved by restricting
access to a protection domain's physical memory
from I/O devices not assigned to it, through
address- translation tables.
VT-x: Virtualization Technology for x86
Method by which x86-based "guest" operating
systems can run within another "host" x86
operating system, with little or no modification of
the guest OS.
W
WOL: Wake-on LAN
A feature that provides the ability to remotely
power on a system through a network connection.
Web Service for Management
Is a general Web services protocol based on
SOAP for managing systems such as PCs, servers,
devices, Web services and other applications, and
other manageable entities.
