DFS

DFS may refer to:

Computing

• Decoherence-free subspaces, subspace of a system's Hilbert space where the system is decoupled from the environment
• Dynamic Frequency Selection, part of the IEEE 802.11h wireless standard
• Discrete Fourier series, the discrete version of Fourier series
• Dynamic frequency scaling, a method for reducing a microprocessor's power consumption
• Depth-first search, an algorithm for traversing or searching tree or graph data structures

File systems

• Disc Filing System, a filesystem developed by Acorn Computers
• Distributed file system, a method of storing persistent data over computer network
  • Distributed File System (Microsoft), distributed SMB file shares
  • DCE Distributed File System (DCE/DFS), the remote file access protocol used with the Distributed Computing Environment

Engineering

• DFS Kopernikus (Deutscher Fernmeldesatellit Kopernikus), a series of satellites
• Digital Frequency Synthesizer, generation of different frequency from another in phase
• Definitive Feasibility Study, a stage of engineering project development; for example see El Boleo

Organisations

• DFS Group (Duty Free Shoppers), a Hong Kong-based retailer operating duty-free shops
• DFS (British retailer), a furniture retailer, formerly Direct Furnishing Supplies
• Dirección Federal de Seguridad, Federal Direction of Security in Mexico
• Department of Financial Studies, University of Delhi, Delhi, India
• Department of Field Support, a department of the United Nations
• Deutsche Flugsicherung, the German air traffic control organisation
• Deutsche Forschungsanstalt für Segelflug (German Research Institute for Sailplane Flight), developers of the DFS brake for gliders
• Det frivillige Skyttervesen, the National Rifle Association of Norway

United States

• Dancer Fitzgerald Sample, a defunct advertising agency, now known as Saatchi & Saatchi
• Discover Financial Services, a financial services company
• Dwyer Aircraft Services (ICAO airline designator), see Airline codes-D
• Dell Financial Services, a part of Dell; See Jeffrey S. Lyons

Other uses

• Disease-free survival, a measure of the efficacy of medical treatment
• Duty-free shop, retail outlets that are exempt from the payment of certain taxes and duties
• Daily fantasy sports, a subset of fantasy sport games

See also

• The Program Exchange or DFS Program Exchange, a syndicator of television programs original owned by Dancer Fitzgerald Sample