A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] 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.

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硬盘驱动器（英語： Hard Disk Drive ，缩写： HDD ），简称硬盘（ hard disk ）或硬驱（ hard drive ），又称“机械硬盘”或“傳統硬碟” [a] ，是电脑上使用坚硬的旋转磁性盘片为基础的非依电性存储器，它在平整的磁性表面存储和检索数字数据，数据通过离磁性表面 ...

A hard drive is used for storing and retrieving digital information in computers and other devices. It serves as the main storage medium for operating systems, software applications and personal files such as documents, photos, videos and music. Hard drives offer non-volatile storage, meaning they retain data even when the device is powered off.

HDDs are used either as the primary or secondary storage device in a computer. They are commonly found in the drive bay and are connected to the motherboard via an Advanced Technology Attachment, Serial ATA, parallel ATA or Small Computer System Interface (SCSI) cable, among other formats.

硬盘驱动器（Hard-Disk Drive）简称硬盘，是一种主要的电脑存储媒介，由一个或者多个铝制或者玻璃制的碟片组成。 这些碟片外覆盖有铁磁性材料。 绝大多数硬盘都是固定硬盘，被永久性地密封固定在硬盘驱动器中。

2024年4月30日 · HDD is a hard disk drive, which stores data on a spinning disk. SSD is a solid state drive, which stores data on a chip. SSD is faster and more durable than HDD.

硬盘（港台称之为硬碟，英文名：Hard Disk，全名温彻斯特式硬盘）是计算机最主要的存储设备。 它是由一个或者多个铝制或者玻璃制的碟片组成。 这些碟片外覆盖有铁磁性材料。

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WD 5TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready - WDBU6Y0050BBK-WESN 4.6 out of 5 stars 276,493