• 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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  • archival storage

    In computers, archival storage is storage for data that may not be actively needed but is kept for possible future use or for record-keeping purposes. 

  • backup storage

    In computers, backup storage is storage that is intended as a copy of the storage that is actively in use so that, if the storage medium such as a hard disk fails and data is lost on that medium, it can be recovered from the copy. 

  • information life cycle management (ILM)

    Information life cycle management (ILM) is a comprehensive approach to managing the flow of an information system's data and associated metadata from creation and initial storage to the time when it becomes obsolete and is deleted. 

  • double-parity RAID

    Double-parity RAID (redundant array of independent disks), also called diagonal-parity RAID, Advanced Data Guarding (RAID_ADG), or RAID-6, is a method of protecting against multiple storage drive failures by creating two sets of parity data on an arr... 

  • bit padding

    Bit padding is the addition of one or more extra bits to a transmission or storage unit to make it conform to a standard size. 

  • yottabyte

    A yottabyte is a measure of theoretical storage capacity and is 2 to the 80th power bytes or, in decimal, approximately a thousand zettabytes, a trillion terabytes, or a million trillion megabytes. 

  • failover

    Failover is a backup operational mode in which the functions of a system component (such as a processor, server, network, or database, for example) are assumed by secondary system components when the primary component becomes unavailable through eith... 

  • SMI-S (Storage Management Initiative Specification)

    SMI-S (Storage Management Initiative Specification) is a standard developed by the Storage Network Industry Association (SNIA) that is intended to facilitate the management of storage devices from multiple vendors in storage area networks (SANs). 

  • storage utilization

    Storage utilization is a measure of how well the available data storage space in an enterprise is used. 

  • business impact analysis (BIA)

    Business impact analysis (BIA) is an essential component of an organization's business continuance plan; it includes an exploratory component to reveal any vulnerabilities, and a planning component to develop strategies for minimizing risk.