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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<glossary id="Glossary">
<glossdiv>
<title>A</title>
<glossentry>
<glossterm>ACPI</glossterm>
<glossdef>
<para>Advanced Configuration and Power Interface, an industry
specification for BIOS and hardware extensions to configure PC
hardware and perform power management. Windows 2000 and higher as well
as Linux 2.4 and higher support ACPI. Windows can only enable or
disable ACPI support at installation time.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>AHCI</glossterm>
<glossdef>
<para>Advanced Host Controller Interface, the interface that supports
SATA devices such as hard disks. See <xref
linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>AMD-V</glossterm>
<glossdef>
<para>The hardware virtualization features built into modern AMD
processors. See <xref linkend="hwvirt" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>API</glossterm>
<glossdef>
<para>Application Programming Interface.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>APIC</glossterm>
<glossdef>
<para>Advanced Programmable Interrupt Controller, a newer version of
the original PC PIC (programmable interrupt controller). Most modern
CPUs contain an on-chip APIC ("local APIC"). Many systems also contain
an I/O APIC (input output APIC) as a separate chip which provides more
than 16 IRQs. Windows 2000 and higher use a different kernel if they
detect an I/O APIC during installation. Therefore an I/O APIC must not
be removed after installation.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>ATA</glossterm>
<glossdef>
<para>Advanced Technology Attachment, an industry standard for hard
disk interfaces (synonymous with IDE). See <xref
linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>B</title>
<glossentry>
<glossterm>BIOS</glossterm>
<glossdef>
<para>Basic Input/Output System, the firmware built into most personal
computers which is responsible of initializing the hardware after the
computer has been turned on and then booting an operating system.
VirtualBox ships with its own virtual BIOS that runs when a virtual
machine is started.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>C</title>
<glossentry>
<glossterm>COM</glossterm>
<glossdef>
<para>Microsoft Component Object Model, a programming infrastructure
for modular software. COM allows applications to provide application
programming interfaces which can be accessed from various other
programming languages and applications. VirtualBox makes use of COM
both internally and externally to provide a comprehensive API to 3rd
party developers.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>D</title>
<glossentry>
<glossterm>DHCP</glossterm>
<glossdef>
<para>Dynamic Host Configuration Protocol. This allows a networking
device in a network to acquire its IP address (and other networking
details) automatically, in order to avoid having to configure all
devices in a network with fixed IP addresses. VirtualBox has a
built-in DHCP server that delivers an IP addresses to a virtual
machine when networking is configured to NAT; see <xref
linkend="networkingdetails" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>DKMS</glossterm>
<glossdef>
<para>Dynamic Kernel Module Support. A framework that simplifies
installing and updating external kernel modules on Linux machines; see
<xref linkend="externalkernelmodules" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>E</title>
<glossentry>
<glossterm>EFI</glossterm>
<glossdef>
<para>Extensible Firmware Interface, a firmware built into computers
which is designed to replace the aging BIOS. Originally designed by
Intel, most modern operating systems can now boot on computers which
have EFI instead of a BIOS built into them; see <xref
linkend="efi" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>EHCI</glossterm>
<glossdef>
<para>Enhanced Host Controller Interface, the interface that
implements the USB 2.0 standard.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>G</title>
<glossentry>
<glossterm>GUI</glossterm>
<glossdef>
<para>Graphical User Interface. Commonly used as an antonym to a
"command line interface", in the context of VirtualBox, we sometimes
refer to the main graphical
<computeroutput>VirtualBox</computeroutput> program as the "GUI", to
differentiate it from the <computeroutput>VBoxManage</computeroutput>
interface.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>GUID</glossterm>
<glossdef>
<para>See UUID.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>I</title>
<glossentry>
<glossterm>IDE</glossterm>
<glossdef>
<para>Integrated Drive Electronics, an industry standard for hard disk
interfaces. See <xref linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>I/O APIC</glossterm>
<glossdef>
<para>See APIC.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>iSCSI</glossterm>
<glossdef>
<para>Internet SCSI; see <xref linkend="storage-iscsi" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>M</title>
<glossentry>
<glossterm>MAC</glossterm>
<glossdef>
<para>Media Access Control, a part of an Ethernet network card. A MAC
address is a 6-byte number which identifies a network card. It is
typically written in hexadecimal notation where the bytes are
separated by colons, such as
<computeroutput>00:17:3A:5E:CB:08</computeroutput>.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>MSI</glossterm>
<glossdef>
<para>Message Signalled Interrupts, as supported by modern chipsets
such as the ICH9; see <xref linkend="settings-motherboard" />. As
opposed to traditional pin-based interrupts, with MSI, a small amount
of data can accompany the actual interrupt message. This reduces the
amount of hardware pins required, allows for more interrupts and
better performance.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>N</title>
<glossentry>
<glossterm>NAT</glossterm>
<glossdef>
<para>Network Address Translation. A technique to share networking
interfaces by which an interface modifies the source and/or target IP
addresses of network packets according to specific rules. Commonly
employed by routers and firewalls to shield an internal network from
the Internet, VirtualBox can use NAT to easily share a host's physical
networking hardware with its virtual machines. See <xref
linkend="network_nat" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>O</title>
<glossentry>
<glossterm>OVF</glossterm>
<glossdef>
<para>Open Virtualization Format, a cross-platform industry standard
to exchange virtual appliances between virtualization products; see
<xref linkend="ovf" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>P</title>
<glossentry>
<glossterm>PAE</glossterm>
<glossdef>
<para>Physical Address Extension. This allows accessing more than 4 GB
of RAM even in 32-bit environments; see <xref
linkend="settings-general-advanced" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>PIC</glossterm>
<glossdef>
<para>See APIC.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>PXE</glossterm>
<glossdef>
<para>Preboot Execution Environment, an industry standard for booting
PC systems from remote network locations. It includes DHCP for IP
configuration and TFTP for file transfer. Using UNDI, a hardware
independent driver stack for accessing the network card from bootstrap
code is available.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>R</title>
<glossentry>
<glossterm>RDP</glossterm>
<glossdef>
<para>Remote Desktop Protocol, a protocol developed by Microsoft as an
extension to the ITU T.128 and T.124 video conferencing protocol. With
RDP, a PC system can be controlled from a remote location using a
network connection over which data is transferred in both directions.
Typically graphics updates and audio are sent from the remote machine
and keyboard and mouse input events are sent from the client. A
VirtualBox extension package by Oracle provides VRDP, an enhanced
implementation of the relevant standards which is largely compatible
with Microsoft's RDP implementation. See <xref linkend="vrde" /> for
details.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>S</title>
<glossentry>
<glossterm>SAS</glossterm>
<glossdef>
<para>Serial Attached SCSI, an industry standard for hard disk
interfaces. See <xref linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>SATA</glossterm>
<glossdef>
<para>Serial ATA, an industry standard for hard disk interfaces. See
<xref linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>SCSI</glossterm>
<glossdef>
<para>Small Computer System Interface. An industry standard for data
transfer between devices, especially for storage. See <xref
linkend="harddiskcontrollers" />.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>SMP</glossterm>
<glossdef>
<para>Symmetrical Multiprocessing, meaning that the resources of a
computer are shared between several processors. These can either be
several processor chips or, as is more common with modern hardware,
multiple CPU cores in one processor.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>SSD</glossterm>
<glossdef>
<para>Solid-state drive, uses microchips for storing data in a computer
system. Compared to classical hard-disks they are having no mechanical
components like spinning disks.
</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>T</title>
<glossentry>
<glossterm>TAR</glossterm>
<glossdef>
<para>A widely used file format for archiving. Originally, this stood
for "Tape ARchive" and was already supported by very early Unix
versions for backing up data on tape. The file format is still widely
used today, for example, with OVF archives (with an
<computeroutput>.ova</computeroutput> file extension); see <xref
linkend="ovf" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>U</title>
<glossentry>
<glossterm>UUID</glossterm>
<glossdef>
<para>A Universally Unique Identifier -- often also called GUID
(Globally Unique Identifier) -- is a string of numbers and letters
which can be computed dynamically and is guaranteed to be unique.
Generally, it is used as a global handle to identify entities.
VirtualBox makes use of UUIDs to identify VMs, Virtual Disk Images
(VDI files) and other entities.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>V</title>
<glossentry>
<glossterm>VM</glossterm>
<glossdef>
<para>Virtual Machine -- a virtual computer that VirtualBox allows you
to run on top of your actual hardware. See <xref
linkend="virtintro" /> for details.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>VMM</glossterm>
<glossdef>
<para>Virtual Machine Manager -- the component of VirtualBox that
controls VM execution. See <xref linkend="technical-components" /> for
a list of VirtualBox components.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>VRDE</glossterm>
<glossdef>
<para>VirtualBox Remote Desktop Extension. This interface is built
into VirtualBox to allow VirtualBox extension packages to supply
remote access to virtual machines. A VirtualBox extension package by
Oracle provides VRDP support; see <xref linkend="vrde" /> for
details.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>VRDP</glossterm>
<glossdef>
<para>See RDP.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>VT-x</glossterm>
<glossdef>
<para>The hardware virtualization features built into modern Intel
processors. See <xref linkend="hwvirt" />.</para>
</glossdef>
</glossentry>
</glossdiv>
<glossdiv>
<title>X</title>
<glossentry>
<glossterm>XML</glossterm>
<glossdef>
<para>The eXtensible Markup Language, a metastandard for all kinds of
textual information. XML only specifies how data in the document is
organized generally and does not prescribe how to semantically
organize content.</para>
</glossdef>
</glossentry>
<glossentry>
<glossterm>XPCOM</glossterm>
<glossdef>
<para>Mozilla Cross Platform Component Object Model, a programming
infrastructure developed by the Mozilla browser project which is
similar to Microsoft COM and allows applications to provide a modular
programming interface. VirtualBox makes use of XPCOM on Linux both
internally and externally to provide a comprehensive API to
third-party developers.</para>
</glossdef>
</glossentry>
</glossdiv>
</glossary>
|