• 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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  • SAN file system

    A SAN file system (that is, a storage area network file system) is programming that enables the sharing of the same copies of files stored on common storage media among multiple servers that may have different operating systems. 

  • storage encryption

    Storage encryption is the use of encryption/decryption of backed-up and archived data, both in transit and on storage media. 

  • bare metal restore

    In disaster recovery, a bare metal restore is the process of reformatting a computer from scratch after a catastrophic failure. 

  • tiered storage

    Tiered storage is the assignment of different categories of data to different types of storage media in order to reduce total storage cost. 

  • NAS accelerator

    A NAS accelerator (network-attached storage accelerator) is a printed circuit card that offloads TCP/IP processing from a microprocessor. 

  • zoned-bit recording (ZBR)

    Zoned-bit recording (ZBR) is a method of physically optimizing the utilization of a hard drive by placing more sectors in the outer tracks than in the inner tracks. 

  • memory card (flash memory card or storage card)

    A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video, for use on small, portable or remote computing devices. 

  • atomic storage (atomic memory)

    Atomic storage (sometimes called atomic memory) is a nanotechnology approach to computer data storage that works with bits and atoms on the individual level. 

  • petabyte

    A petabyte is a measure of memory or storage capacity and is 2 to the 50th power bytes or, in decimal, approximately a thousand terabytes. 

  • AIT (advanced intelligent tape)

    AIT (advanced intelligent tape) is a magnetic tape and drive system used for computer data storage and archiving.