H - Definitions

  • H

    HA storage (high-availability storage)

    High-availability storage (HA storage) is a storage system that is continuously operational or provides at least 99% uptime.

  • hard disk

    A hard disk is part of a unit, often called a "disk drive," "hard drive," or "hard disk drive," that stores and provides relatively quick access to large amounts of data on an electromagnetically charged surface or set of surfaces.

  • hard disk drive (HDD)

    Hard disk drives are a type of physical storage media that use spinning disk platters to store nonsequential data in personal computers and enterprise data centers.

  • hard drive shredder

    A hard drive shredder is a mechanical device that physically destroys old hard drives in such a way that the data they contain cannot be recovered.

  • hard zoning

    Hard zoning is used to allocate resources and control access in a storage-area network (SAN).

  • hardware RAID (hardware redundant array of independent disk)

    Hardware RAID is a form of RAID where processing is done externally.

  • HD-DVD (high-density DVD)

    HD-DVD (high-density DVD) is an optical digital storage medium with a capacity that far exceeds that of standard DVD media... (Continued)

  • HD-ROM (High-Density - Read Only Memory)

    HD-ROM (High-Density - Read Only Memory) is a high-capacity storage technology developed at Norsam Technologies in conjunction with an IBM research group that enables a disk to store hundreds of times as much information as a CD-ROM. HD-ROM uses a very narrow, finely-focused particle beam (charged gallium ions) to write data.

  • helical scan

    Helical scan is a way of recording information onto magnetic tape.

  • holographic disk drive

    A holographic disk drive is a holographic storage device that uses a laser to store data to optical media in three dimensions, maximizing storage capacity by using the media's depth... (Continued)

  • holographic storage (holostorage)

    Holographic storage is computer storage that uses laser beams to store computer-generated data in three dimensions.

  • host bus adapter (HBA)

    A host bus adapter (HBA) provides physical connectivity and input/output between a server and a network and/or storage device.

  • host-based replication

    Host-based replication is the processes of using servers to copy data from one site to another.

  • hot data

    Hot data is a reference to data that is accessed the most by an organization.

  • hot plug

    Hot plug is the addition of a component to a running computer system without significant interruption to the operation of the system.

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