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  2. Hard disk drive performance characteristics - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive...

    A hard disk head on an access arm resting on a hard disk platter. The access time or response time of a rotating drive is a measure of the time it takes before the drive can actually transfer data. The factors that control this time on a rotating drive are mostly related to the mechanical nature of the rotating disks and moving heads. It is ...

  3. Density (computer storage) - Wikipedia

    en.wikipedia.org/wiki/Density_(computer_storage)

    With the notable exception of NAND Flash memory, increasing storage density of a medium typically improves the transfer speed at which that medium can operate. This is most obvious when considering various disk-based media, where the storage elements are spread over the surface of the disk and must be physically rotated under the "head" in ...

  4. Zone bit recording - Wikipedia

    en.wikipedia.org/wiki/Zone_bit_recording

    This permits the drive to have more bits stored in the outside tracks compared to the inner ones. Storing more bits per track equates to achieving a higher total data capacity on the same disk area. [2] However, ZBR influences other performance characteristics of the hard disk. In the outermost tracks, data will have the highest data transfer ...

  5. IOPS - Wikipedia

    en.wikipedia.org/wiki/IOPS

    Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN).

  6. Hybrid drive - Wikipedia

    en.wikipedia.org/wiki/Hybrid_drive

    A hybrid drive (solid state hybrid drive – SSHD, and dual-storage drive) is a logical or physical computer storage device that combines a faster storage medium such as solid-state drive (SSD) with a higher-capacity hard disk drive (HDD). The intent is adding some of the speed of SSDs to the cost-effective storage capacity of traditional HDDs.

  7. Shingled magnetic recording - Wikipedia

    en.wikipedia.org/wiki/Shingled_magnetic_recording

    Seagate started shipping device-managed SMR hard drives in September 2013, stating an increase in overall capacity of about 25% compared to non-shingled storage. [1] [11] In September 2014, HGST announced a 10 TB drive filled with helium that uses host-managed shingled magnetic recording, [12] although in December 2015 it followed this with a 10 TB helium-filled drive that uses conventional ...

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