Software-defined storage Definitions

  • A

    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.

  • active archive

    An active archive is a collection of data that is too valuable for a company to discard, but only needs to be accessed occasionally.

  • address space

    Address space is the amount of memory allocated for all possible addresses for a computational entity, such as a device, a file, a server, or a networked computer.

  • 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.

  • AHCI (Advanced Host Controller Interface)

    Advanced Host Controller Interface, or AHCI, is a technical standard for an interface that enables software to communicate with Serial ATA (SATA) devices.

  • Andrew file system (AFS)

    An Andrew file system (AFS) is a location-independent file system that uses a local cache to reduce the workload and increase the performance of a distributed computing environment.

  • application-aware storage

    Application-aware storage is a storage system with built-in intelligence about relevant applications and their utilization patterns.

  • archive

    In enterprise data storage, an archive is a collection of infrequently accessed data that needs to be stored for long periods of time to meet backup and compliance requirements.

  • ASPI (Advanced SCSI Programming Interface)

    ASPI (Advanced SCSI Programming Interface) specifies how an application program can communicate with a SCSI (Small Computer System Interface) device through a common SCSI device driver.

  • 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.

  • automated data tiering

    Automated data tiering is a type of software program that moves data files, volumes or blocks between tiered storage according to company-defined policy.

  • automated storage tiering (AST)

    Automated storage tiering (AST) is a storage software management feature that dynamically moves information between different disk types and RAID levels to meet space, performance and cost requirements.

  • auxiliary storage

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

  • B

    bad block

    A bad block is an area of storage media that is no longer reliable for storing and retrieving data because it has been physically damaged or corrupted.

  • bare metal restore

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

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