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Wikimedia infrastructure

Data centres and PoPs


HTTP Caching




These are the current and former server clusters used by the Wikimedia Foundation, grouped by colocation facilities. Cluster names are formed from a two-letter abbreviation of the hosting provider (e.g. "eq" for Equinix) and the three-letter IATA code of the nearest major airport (e.g. "iad" for Washington Dulles).

Map of Wikimedia Foundation clusters


One of the Wikimedia server racks at CyrusOne (codfw).
Servers in Ashburn, Virginia (eqiad).
Cluster Location Usage Since
Codfw cluster‎ Carrollton, Texas, United States (North America) Application services 2014
Eqiad cluster‎ Ashburn, Virginia, United States (North America) Application services 2010
Eqsin cluster‎ Singapore (Asia) Caching 2017[1]
Esams cluster‎ Amsterdam, Netherlands (Europe) Caching 2009[2]
Ulsfo cluster‎ San Francisco, California, United States (North America) Caching 2014[3]
Cluster Location Usage Since
eqdfw Dallas, Texas (United States) Networking 2015[4][5]
eqord Chicago, Illinois (United States) Networking 2015[4][5]
knams Amsterdam (Netherlands) Networking (for esams) 2005?[6]


Cluster Location Usage Years
Lopar cluster Paris (France) Caching 2005
Pmtpa cluster Tampa, Florida (United States) Application services 2004 – 2014
San Diego San Diego (United States) Webserver 2001 – 2004
Yaseo cluster Seoul (South Korea) zhwiki and kowiki 2005 – 2009[7][8]

See also


  1. T156028: Name Asia Cache DC, Wikimedia Phabricator, 26 September 2017
  3. "ULSFO going online", Deployments calendar, Week of 3 February 2014.
  4. 4.0 4.1 WMF Infrastructure Quarterly Review 2015 FQ1, page 66 "TechOps - Appendix", 15 October 2015
  5. 5.0 5.1 T91077: EQDFW/EQORD Deployment, Wikimedia Phabricator, 27 February 2015
  7. Started on September 2005. Oldest mention in Server admin log, 9 September 2005.
  8. "Decommissioned all yaseo servers", Server admin log, 23 July 2009.