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    A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on … See more

    The first production IBM hard disk drive, the 350 disk storage, shipped in 1957 as a component of the IBM 305 RAMAC system. It was … See more

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    The highest-capacity HDDs shipping commercially in 2024 are 32 TB. The capacity of a hard disk drive, as reported by an operating … See more

    The factors that limit the time to access the data on an HDD are mostly related to the mechanical nature of the rotating disks and moving heads, … See more

    Due to the extremely close spacing between the heads and the disk surface, HDDs are vulnerable to being damaged by a head crash – a failure of the disk in which the head scrapes … See more

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    Magnetic recording
    A modern HDD records data by magnetizing a thin film of ferromagnetic material on both sides of a disk. Sequential changes in the … See more

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    IBM's first hard disk drive, the IBM 350, used a stack of fifty 24-inch platters, stored 3.75 MB of data (approximately the size of one modern … See more

    Current hard drives connect to a computer over one of several bus types, including parallel ATA, Serial ATA, SCSI, Serial Attached SCSI See more

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  3. ハードディスクドライブ - Wikipedia

  4. ハードディスク(HDD / HD)とは - 意味をわかりやすく - IT用語 ...

  5. 【価格.com】外付けHDD・ハードディスク | 通販・価格比較・製 …

  6. A hard disk drive (HDD), hard disk, hard drive, or fixed disk, [b] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.
    en.wikipedia.org/wiki/Hard_disk_drive
    A hard disk drive (HDD) is an internal or external computer component that stores data, such as the operating system, applications, and user files. HDDs are “non-volatile” storage devices, meaning they retain stored data even when power isn't being supplied.
    www.crucial.com/articles/pc-builders/what-is-a-har…
    A hard disk drive (sometimes abbreviated as a hard drive, HD, or HDD) is a non-volatile data storage device. It is usually installed internally in a computer, attached directly to the disk controller of the computer's motherboard. It contains one or more platters housed inside an air-sealed casing.
    www.computerhope.com/jargon/h/harddriv.htm
    A computer’s hard drive is a device consisting of several hard disks, read/write heads, a drive motor to spin the disks, and a small amount of circuitry, all sealed in a metal case to protect the disks from dust.
    www.britannica.com/technology/hard-disk
    What is a Hard Disk Drive? A hard disk is a memory storage device that looks like this: The disk is divided into tracks. Each track is further divided into sectors. The point to be noted here is that outer tracks are bigger in size than the inner tracks but they contain the same number of sectors and have equal storage capacity.
    www.geeksforgeeks.org/hard-disk-drive-hdd-secon…
  7. WEBDec 6, 2021 · What is a hard disk drive? A computer hard disk drive (HDD) is a non-volatile data storage device. Non-volatile refers to storage devices that maintain stored data when turned off. All computers need a storage device, and HDDs are just one example of a type of storage …

  8. WEBSep 19, 2023 · Tim Fisher. Updated on September 19, 2023. Reviewed by. Chris Selph. In This Article. The hard disk drive is the main, and usually most substantial, data storage hardware device in a computer. The operating system, software titles, and most other files are stored on the …

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