Disk drives

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  • SATA controller

    A SATA controller handles how hard drives are connected to a computer's motherboard. 

  • helium hard drive

    A helium drive is a hard disk that exploits the characteristic lightness of that gas to increase the medium’s potential speed and storage density. Potential speed and density are increased because helium, which is less dense than air, creates less d... 

  • hot plug

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

  • Express Bay

    Express Bay is an externally accessible storage slot that is designed to accept a high-performance PCI Express (PCIe) solid-state drive (SSD), 

  • RAID controller

    A RAID controller is a device used to manage hard disk drives (HDDs) or solid-state drives (SSDs) in a computer or storage array so they work as a logical unit and the data on the drives is protected. 

  • bad block

    A bad block is a damaged area of magnetic storage media (i.e., hard disk) that cannot reliably be used to store and retrieve data. 

  • NVMe (non-volatile memory express)

    Non-volatile memory express, also known as NVMe or NVM Express, is an interface specification that aims to enable a solid-state drive (SSD) to make the most effective use of the high-speed Peripheral Component Interconnect Express (PCIe) bus in a com... 

  • block storage

    Block storage is a type of data storage typically used in storage-area network (SAN) environments where data is stored in volumes, also referred to as blocks. 

  • storage capacity planning

    The goal of storage capacity planning is to predict how much storage an organization will require so that just enough disk space can be purchased to meet the needs of users and applications. 

  • solid-state drive (SSD)

    An SSD (solid-state drive or solid-state disk) is a storage device that stores persistent data on solid-state flash memory. (Continued...) 

  • See more Definitions on Disk drives
About Disk drives

Disk drives used in enterprise-level disk arrays are SAS, SATA and Fibre Channel, 3.5-inch or 2.5-inch, they now store up to 1 TB. Read news about hard disk drive technology on this topic page.