Difference between revisions of "Acronyms"

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<div class="nonumtoc">
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Acronyms are horrible things - they tend to create a layer of obfuscation that confuses new users, allow knowledge and understanding to diverge from reality (as original meanings get lost and forgotten), and can be used by some to imply some kind of knowledge superiority over their peers.  Unfortunately they are rife in [[#I|IT]] (!), and systems and techniques are often given unnecessarily long or complex names in order to create a ''good'' acronym...
{| class="toc"
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| '''Jump to: '''
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| '''[[#A|A]]'''
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| '''[[#B|B]]'''
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| '''[[#C|C]]'''
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| '''[[#D|D]]'''
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| '''[[#E|E]]'''
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| '''[[#F|F]]'''
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| '''[[#G|G]]'''
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| '''[[#H|H]]'''
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| '''[[#I|I]]'''
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| '''[[#J|J]]'''
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| '''[[#K|K]]'''
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| '''[[#L|L]]'''
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| '''[[#M|M]]'''
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| '''[[#N|N]]'''
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| '''[[#O|O]]'''
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| '''[[#P|P]]'''
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| '''[[#Q|Q]]'''
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| '''[[#R|R]]'''
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| '''[[#S|S]]'''
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| '''[[#T|T]]'''
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| '''[[#U|U]]'''
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| '''[[#V|V]]'''
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| '''[[#W|W]]'''
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| '''[[#X|X]]'''
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| '''[[#Y|Y]]'''
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| '''[[#Z|Z]]'''
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== A ==
== A ==
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* '''AP''' - Asia Pacific
* '''AP''' - Asia Pacific
* '''API''' - Application Programming Interface, used to allow a 3rd party access to an application via software/script
* '''API''' - Application Programming Interface, used to allow a 3rd party access to an application via software/script
* '''ARP''' - [http://ww.wikipedia.org/wiki/Address_Resolution_Protocol Address Resolution Protocol], allows translation of [[#I|IP]] addresses into [[#M|MAC]] addresses
* '''ASCII''' - [http://www.wikipedia.org/wiki/ASCII American Standard Code for Information Interchange], character encoding system
* '''ASCII''' - [http://www.wikipedia.org/wiki/ASCII American Standard Code for Information Interchange], character encoding system
* '''ASLR''' - Address Space Layout Randomisation, security feature that randomises data layout in memory
* '''ASLR''' - Address Space Layout Randomisation, security feature that randomises data layout in memory
* '''ASR''' - Automated System Recovery, HP feature to reboot hardware in the case of the OS failing
* '''ASR''' - Automated System Recovery, HP feature to reboot hardware in the case of the OS failing
* '''ATA''' - AT Attachment (disks), also known [[Acronyms#I|IDE]] or [[Acronyms#E|EIDE]]
* '''ATA''' - AT Attachment (disks), also known [[#I|IDE]] or [[#E|EIDE]]


== B ==
== B ==
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== C ==
== C ==
* '''CDB''' - [[Acronyms#S|SCSI]] [http://www.wikipedia.org/wiki/SCSI_CDB Command Descriptor Block]
* '''CIDR''' - [http://www.wikipedia.org/wiki/Classless_Inter-Domain_Routing Classless Inter-Domain Routing], method of IP address allocation that allows chunks of IP address space to be specified via variable length subnet masks
* '''CIFS''' - Common Internet File System
* '''CIFS''' - Common Internet File System
* '''CIM''' - [http://www.wikipedia.org/wiki/Common_Information_Model_%28computing%29 Common Information Model]
* '''CMDB''' - Configuration Management Database
* '''CMDB''' - Configuration Management Database
* '''CPU''' - [http://www.wikipedia.org/wiki/Central_processing_unit Central Processing Unit], the main number cruncher of a computer or device
* '''CRAC''' - Computer Room Air-Conditioning
* '''CRAC''' - Computer Room Air-Conditioning
* '''CRC''' - [http://www.wikipedia.org/wiki/Cyclic_redundancy_check Cyclic Redundancy Check], allows for error detection (without recovery)


== D ==
== D ==
* '''DCE''' - Data Communications Equipment, eg modem
* '''DCE''' - Data Communications Equipment, eg modem
* '''DHCP''' - [http://www.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol Dynamic Host Configuration Protocol]
* '''DHCP''' - [http://www.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol Dynamic Host Configuration Protocol]
* '''DNS''' - [http://www.wikipedia.org/wiki/Domain_Name_System Domain Name System]
* '''DMA''' - Direct Memory Access, allows components direct access to system memory (rather than through the [[Acronyms#C|CPU]])
* '''DNS''' - [http://www.wikipedia.org/wiki/Domain_Name_System Domain Name System], converts human friendly names into computer friendly numerical addresses
* '''DSN''' - Data Source Name (or sometimes Database Source Name)
* '''DTE''' - Data Termination Equipment, eg router
* '''DTE''' - Data Termination Equipment, eg router


== E ==
== E ==
* '''EIDE''' - Enhanced IDE (drive), approximately equivalent of ATA-2
* '''ECC''' - [http://www.wikipedia.org/wiki/Error-correcting_code Error Checking Code], allows for error detection and some recovery of errors
* '''EIDE''' - Enhanced [[#I|IDE]] (drive), approximately equivalent of [[#A|ATA]]-2
* '''EMEA''' - Europe, Middle-East, Asia
* '''EMEA''' - Europe, Middle-East, Asia
* '''ESX''' - [[:Category:ESX|Elastic Sky X]], the [[:Category:VMware|VMware]] [[:Category:Virtual_Machine|Virtual Machine]] host server
* '''EULA''' - End User License Agreement, contract imposed on user of product (normally software) that's never read by user


== F ==
== F ==
* '''FATA''' - Fibre-Channel [[Acronyms#A|ATA]] disks, slower disks with FC interface
* '''FATA''' - Fibre-Channel [[Acronyms#A|ATA]] disks, slower disks with FC interface
* '''FC''' - Fibre-Channel, normally used to connect servers with remote storage
* '''FC''' - Fibre-Channel, normally used to connect servers with remote storage
* '''FOSS''' - Free and Open Source Software
* '''FQDN''' - Fully Qualified Domain Name, eg <code>vwiki.sandfordit.com</code> as opposed to <code>vwiki</code>
* '''FQDN''' - Fully Qualified Domain Name, eg <code>vwiki.sandfordit.com</code> as opposed to <code>vwiki</code>
* '''FTP''' - File Transfer Protocol, uses TCP 20 and 21
* '''FTP''' - File Transfer Protocol, uses TCP 20 and 21
* '''FTPS''' - Secure version of FTP, FTP over [[Acronyms#S|SSL]]/[[Acronyms#T|TLS]] using TCP 989 and 990 (not to be confused with [[Acronyms#S|SFTP]]
* '''FTPS''' - Secure version of FTP, FTP over [[Acronyms#S|SSL]]/[[Acronyms#T|TLS]], (not to be confused with [[Acronyms#S|SFTP]])


== G ==
== G ==
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== I ==
== I ==
* '''IDE''' - Integrated Drive Electronics, aka [[Acronyms#A|ATA]] version 1
* '''IDE''' - Integrated Drive Electronics, aka [[Acronyms#A|ATA]] version 1
* '''IMAP''' - Internet Message Access Protocol, mailbox access protocol
* '''IMAP''' - [http://www.wikipedia.org/wiki/Internet_Message_Access_Protocol Internet Message Access Protocol], mailbox access protocol
* '''IP''' - Internet Protocol
* '''IP''' - Internet Protocol
* '''IT''' - Information Technology
* '''IPMI''' - Intelligent Platform Management Interface, open standard for managing hardware platforms
* '''IPMI''' - Intelligent Platform Management Interface, open standard for managing hardware platforms
* '''IRQ''' - [http://www.wikipedia.org/wiki/Interrupt_request Interrupt ReQuest]
* '''iSCSI''' - IP Small Computer Serial Interface, [[Acronyms#S|SCSI]] over IP
* '''iSCSI''' - IP Small Computer Serial Interface, [[Acronyms#S|SCSI]] over IP
* '''ISEB''' - Information Systems Examinations Board
* '''ISEB''' - Information Systems Examinations Board
* '''ITIL''' - IT Infrastructure Library
* '''ITIL''' - [[#I|IT]] Infrastructure Library


== J ==
== J ==
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* '''LDAP''' - Lightweight Directory Access Protocol
* '''LDAP''' - Lightweight Directory Access Protocol
* '''LDS''' - Lightweight Directory Services
* '''LDS''' - Lightweight Directory Services
* '''LMTP''' - [http://www.wikipedia.org/wiki/Local_Mail_Transfer_Protocol Local Mail Transfer Protocol] - similar to [[#S|SMTP]] but with no support for mail queueing


== M ==
== M ==
* '''MAC''' - [http://www.wikipedia.org/wiki/MAC_address Media Access Control], link layer address to identify a network interface
* '''MAN''' - Metropolitan Area Network, somewhere between a LAN and a WAN, for example connecting buildings within a localised area
* '''MAN''' - Metropolitan Area Network, somewhere between a LAN and a WAN, for example connecting buildings within a localised area
* '''MIB''' - [http://en.wikipedia.org/wiki/Management_information_base Management Information Base], object hierarchy database, most commonly used in [[#S|SNMP]]
* '''MPLS''' - Multi Protocol Label Switch(ing)
* '''MPLS''' - Multi Protocol Label Switch(ing)
* '''MRTG''' - [http://oss.oetiker.ch/mrtg/ Multi Router Traffic Grapher], Tobi Oetiker's Perl based flexible SNMP poller/grapher
* '''MSCS''' - Microsoft Clustering Services
* '''MSCS''' - Microsoft Clustering Services
* '''MTA''' - [https://www.wikipedia.org/wiki/Message_transfer_agent Message Transfer Agent], receives and forwards [[#S|SMTP]] emails to other MTA's or local mailboxes


== N ==
== N ==
* '''NAS''' - Network Attached Storage, storage that's available via a network
* '''NAS''' - Network Attached Storage, storage that's available via a network
* '''NAT''' - [http://en.wikipedia.org/wiki/Network_address_translation Network Address Translation]
* '''NTP''' - [http://duckduckgo.com/Network_Time_Protocol Network Time Protocol], reliable time sync protocol, uses [[#U|UDP]] 123
* '''NTP''' - [http://duckduckgo.com/Network_Time_Protocol Network Time Protocol], reliable time sync protocol, uses [[#U|UDP]] 123


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== P ==
== P ==
* '''PATA''' - Parallel ATA (disks, newer name for [[Acronyms#ATA|ATA]] disks)
* '''PATA''' - Parallel ATA (disks, newer name for [[Acronyms#A|ATA]] disks)
* '''PCRE''' - [http://www.wikipedia.org/wiki/PCRE Perl Compatible Regular Expressions], a widely used [[Regular_Expressions|Regex]] system
* '''PCRE''' - [http://www.wikipedia.org/wiki/PCRE Perl Compatible Regular Expressions], a widely used [[Regular_Expressions|Regex]] system
* '''PDU''' - [https://en.wikipedia.org/wiki/Protocol_data_unit Protocol Data Unit], a unit or package of data. For example an [[Acronyms#S|SNMP]] Get request is a PDU
* '''PID''' - Process ID, number assigned by the OS to a running process
* '''PID''' - Process ID, number assigned by the OS to a running process
* '''POSIX''' - [http://www.wikipedia.org/wiki/POSIX Portable Operating System Interface], cross OS standards for API's, etc
* '''POSIX''' - [http://www.wikipedia.org/wiki/POSIX Portable Operating System Interface], cross OS standards for API's, etc
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== R ==
== R ==
* '''RAID''' - Redundant Array of Inexpensive (!?) Disks
* '''RAM''' - Random Access Memory - read/write memory
* '''RDP''' - Remote Desktop Protocol
* '''RDP''' - Remote Desktop Protocol
* '''REST''' ([[#A|API]]) - [http://www.wikipedia.org/wiki/Representational_state_transfer Representational State Transfer], web service
* '''RIP''' - Route Information Protocol, old school routing protocol
* '''RIP''' - Route Information Protocol, old school routing protocol
* '''ROM''' - Read Only Memory
* '''RRD''' - Round Robin Database, as used by [http://oss.oetiker.ch/rrdtool/ RRDtool] to store data points
* '''RSS''' - Really Simple Syndication, ''news'' feed protocol
* '''RSS''' - Really Simple Syndication, ''news'' feed protocol


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* '''SCSI''' - Small Computer Serial Interface
* '''SCSI''' - Small Computer Serial Interface
* '''SFTP''' - SSH File Transfer Protocol, secure copy provided by SSH v2 (not to be confused with [[#F|FTPS]])
* '''SFTP''' - SSH File Transfer Protocol, secure copy provided by SSH v2 (not to be confused with [[#F|FTPS]])
* '''SLP''' - [http://www.wikipedia.org/wiki/Service_Location_Protocol Service Locator Protocol]]
* '''SID''' - [http://www.wikipedia.org/wiki/Security_Identifier Security Identifier], a unique ID for a security object, such as a user or a group
* '''SMB''' - [http://www.wikipedia.org/wiki/Server_Message_Block Server Message Block] (aka [[#C|CIFS]]), typically used to access shared file-systems and printers
* '''SMB''' - [http://www.wikipedia.org/wiki/Server_Message_Block Server Message Block] (aka [[#C|CIFS]]), typically used to access shared file-systems and printers
* '''SMTP''' - Simple Mail Transfer Protocol, email message delivery protocol, uses TCP 25
* '''SMTP''' - Simple Mail Transfer Protocol, email message delivery protocol, uses TCP 25
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* '''SQL''' - Structure Query Language
* '''SQL''' - Structure Query Language
* '''SSH''' - Secure Shell, used to access network devices securely over TCP 22
* '''SSH''' - Secure Shell, used to access network devices securely over TCP 22
* '''SVN''' - [http://www.wikipedia.org/wiki/Apache_Subversion SubVersioN], a version control system


== T ==
== T ==
* '''TAR''' - [http://www.wikipedia.org/wiki/Tar_%28file_format%29 Tape Archive], a collection of files bundled together into a container file (historically used for backups)
* '''TAR''' - [http://www.wikipedia.org/wiki/Tar_%28file_format%29 Tape Archive], a collection of files bundled together into a container file (historically used for backups)
* '''TCP''' - Transmission Control Protocol, networking transport of the internet
* '''TCP''' - Transmission Control Protocol, networking transport of the internet
* '''TFTP''' - Trivial FTP, lightweight FTP using UDP 69
* '''TFTP''' - Trivial FTP, lightweight [[#F|FTP]] using UDP 69
* '''TLB''' - [https://www.wikipedia.org/wiki/Translation_lookaside_buffer Translation Lookaside Buffer], a cache mapping virtual memory addresses to physical addresses
* '''TLS''' - Transport Layer Security, successor to [[#S|SSL]]
* '''TLS''' - Transport Layer Security, successor to [[#S|SSL]]
* '''TOS''' - [http://www.wikipedia.org/wiki/Atari_TOS The Operating System], the Atari ST's Operating System
* '''TTL''' - [http://en.wikipedia.org/wiki/Time_to_live Time To Live], a lifespan time-out or propagation limit for a piece of data


== U ==
== U ==
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== V ==
== V ==
* '''VCP''' - VMware Certified Professional, title for certification on VMware Virtual Infrastructure / vSphere
* '''VCP''' - VMware Certified Professional, title for certification on VMware Virtual Infrastructure / vSphere
* '''vCPU''' - Virtual [[#C|CPU]], CPU presented to a virtual machine, provides a variable share of a physical CPU
* '''VI3''' - VMware Infrastructure 3, the name given to an infrastructure running ESX3(i) host servers managed by Virtual Centre v2
* '''VI3''' - VMware Infrastructure 3, the name given to an infrastructure running ESX3(i) host servers managed by Virtual Centre v2
* '''VI4''' - VMware Infrastructure 4, officially called vSphere, the name sometimes given to an infrastructure running ESX4(i) host servers managed by vCentre v4
* '''VI4''' - VMware Infrastructure 4, officially called vSphere, the name sometimes given to an infrastructure running ESX4(i) host servers managed by vCentre v4
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* '''VRF''' - Virtual Routing and Forwarding, used to provide selective/conditional routing
* '''VRF''' - Virtual Routing and Forwarding, used to provide selective/conditional routing
* '''VSS''' - Volume Shadow Service, Microsoft OS service that creates quiesced disks (aka snapshots)
* '''VSS''' - Volume Shadow Service, Microsoft OS service that creates quiesced disks (aka snapshots)
* '''VUM''' - VMware Update Manager


== W ==
== W ==
* '''WAN''' - Wide Area Network
* '''WAN''' - Wide Area Network
* '''WBEM''' - [http://en.wikipedia.org/wiki/Web-Based_Enterprise_Management Web-Based Enterprise Management]
* '''WDS''' - [http://en.wikipedia.org/wiki/Windows_Deployment_Services Windows Deployment Services]
* '''WMI''' - Windows Management Instrumentation, Microsoft's implementation of [[Acronyms#W|WBEM]]
* '''WSUS''' - [http://technet.microsoft.com/en-gb/windowsserver/bb332157.aspx Windows Server Update Services]


== X ==
== X ==
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* '''ZCA''' - Appliance version of a [[#Z|ZCS]]
* '''ZCA''' - Appliance version of a [[#Z|ZCS]]
* '''ZCS''' - [[:Category:Zimbra|Zimbra]] Collaboration Suite
* '''ZCS''' - [[:Category:Zimbra|Zimbra]] Collaboration Suite
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