• 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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  • driver

    A driver is a program that interacts with a particular device or special (frequently optional) kind of software. 

  • enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management and protection, as well as data sharing functions, through connections to numerous (and possibly dissimilar) computer systems. 

  • ADSTAR Distributed Storage Management (ADSM)

    ADSTAR Distributed Storage Management (ADSM) is a collective term for IBM's family of high-end software that helps a customer manage the storage devices (such as mainframe storage, PC disk drives, and Zip drives) that are scattered around the company... 

  • charge-coupled device (CCD)

    A charge-coupled device (CCD) is a light-sensitive integrated circuit that stores and displays the data for an image in such a way that each pixel (picture element) in the image is converted into an electical charge the intensity of which is related ... 

  • autoloader (or stackloader)

    A stackloader (also known as an autoloader) is a tape storage device that automatically loads tape cartridges using a robotic mechanism. 

  • backup

    Backup is the activity of copying files or databases so that they will be preserved in case of equipment failure or other catastrophe. (Continued...) 

  • disk-to-disk-to-tape (D2D2T)

    Disk-to-disk-to-tape (D2D2T) is an approach to computer storage backup and archiving in which data is initially copied to backup storage on a disk and then later on copied again to tape. 

  • Business Continuity and Disaster Recovery (BCDR)

    Business Continuity and Disaster Recovery (BCDR or BC/DR) are closely related practices that describe an organization's preparation for unforeseen risks to continued operations. (Continued...) 

  • continuous data protection (storage convergence)

    Continuous data protection (CDP), also called continuous backup, is a storage system in which all the data in an enterprise is backed up whenever any change is made. (Continued...) 

  • terabyte (TB)

    A terabyte (TB) is a measure of computer storage capacity that is 2 to the 40th power or approximately a trillion bytes (that is, a thousand gigabytes).