C - Definitions

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  • C

    capacity on demand (COD)

    Capacity on demand (COD) is a purchasing option that allows companies to receive equipment with more computer processing, storage or other capacity than the company needs at the time of purchase, and have that extra capacity remain unused and unpaid for until the company actually requires it.

  • Categories of twisted-pair cabling systems

    A twisted-pair cabling system is a cable consisting of one or several pairs of copper wires.

  • CICS (Customer Information Control System)

    CICS (Customer Information Control System) is middleware that sits between the z/OS IBM mainframe operating system and business applications.

  • colocation (colo)

    A colocation facility (colo) is a data center or telecommunications facility in which a business can rent space for servers, storage devices, and other computing and networking hardware.

  • computer room air conditioning (CRAC) unit

    A computer room air conditioning (CRAC) unit is a device that monitors and maintains the temperature, air distribution and humidity in a data center, network or server room.

  • computer room air handler (CRAH)

    A computer room air handler (CRAH) is a device used frequently in data centers to deal with the heat produced by equipment.

  • configuration management database (CMDB)

    A configuration management database (CMDB) is a file -- usually in the form of a standardized database -- that contains all relevant information about the hardware and software components used in an organization's IT services and the relationships among those components.

  • continuous modeling (data center continuous modeling)

    Continuous modeling is an approach to data center management that supplements infrastructure management (DCIM) tools with engineering simulation tools such as computational fluid dynamics (CFD). 

  • converged infrastructure

    Converged infrastructure is an approach to data center management that packages compute, networking, servers, storage and virtualization tools on a prequalified turnkey appliance.

  • COTS, MOTS, GOTS and NOTS

    COTS, MOTS, GOTS and NOTS are abbreviations that describe prepackaged software or -- less commonly -- hardware purchase alternatives.

  • cow power (biogas)

    Cow power is a term for the conversion of manure to usable energy. The energy produced can supplement the electric power offered by a utility or power a facility, such as a factory or a data center.

  • crontab

    Crontab is a Unix command that creates a table or list of commands, each of which is to be executed by the operating system (OS) at a specified time and on a regular schedule.

  • Cygwin

    Cygwin is a collection of open source tools that allows Unix or Linux applications to be compiled and run on a Microsoft Windows operating system (OS) from within a Linux-like interface.

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