• direct-attached storage (DAS)

    Direct-attached storage (DAS) is computer storage that is directly attached to one computer or server and is not, without special support, directly accessible to other ones.

  • delta differencing

    Delta differencing is an incremental approach to backup that only backs up blocks that have changed after the first full backup. The differences are recorded in files called deltas.

  • network-attached storage (NAS)

    Network-attached storage (NAS) is a dedicated hard disk storage device that provides file-based data storage services to other devices on the network.

  • auxiliary storage

    Auxiliary storage is all addressable data storage that is not currently in a computer's main storage or memory.

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  • Purple Book

    The Purple Book is the informal name for Philips and Sony's specification document for the double-density compact disk (DDCD) format. 

  • access method

    In computing, an access method is a program or a hardware mechanism that moves data between the computer and an outlying device such as a hard disk (or other form of storage) or a display terminal. 

  • storage service provider (SSP)

    Also see two related terms, application service provider and management service provider. 

  • DVD-Audio (DVD-A)

    DVD-Audio (DVD-A) is a Digital Versatile Disc (DVD) format, developed by Panasonic, that is specifically designed to hold audio data, and particularly, high-quality music. 

  • CD-Bridge Disc

    A CD-Bridge Disc (sometimes just called a bridge disc) is a compact disc (CD) format that includes extra information on a CD-ROM XA (extended architecture) track, so that the disc can be played on either a CD-i (interactive) player attached to a tele... 

  • multisession CD

    A multisession CD is a recordable CD format (like a CD-R) that allows the recording of a compact disk to be conducted in more than one recording session. 

  • Blue Book

    The Blue Book is the informal name for the standard specification document for stamped multisession (also known as the enhanced CD or E-CD) disk format, developed in 1995 from a supplement to Philips and Sony's 1988 Orange Book. 

  • enhanced CD (E-CD)

    Enhanced CD (E-CD) is a compact disc (CD) format that enables discs to be played on either a CD player or a multimedia-capable device, such as a CD-i player, or a DVD-ROM, or CD-ROM drive, where added material can be displayed. 

  • JBOD (just a bunch of disks or just a bunch of drives)

    JBOD (for "just a bunch of disks," or sometimes "just a bunch of drives") is a term used to refer to a computer's hard disks that haven't been configured according to the RAID (for "redundant array of independent disks") system. 

  • DVD Forum

    The DVD Forum is an international organization made up of companies using or manufacturing digital versatile disc (DVD)-related products.