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📜  硬盘驱动器

📅  最后修改于: 2020-11-07 09:27:27             🧑  作者: Mango

什么是硬盘

HDD是一种机电存储设备，是Hard Disk Drive(硬盘驱动器)的缩写。它使用磁存储来存储和检索数字数据。它是非易失性存储设备。

硬盘驱动器安装在我们计算机系统的内部，直接连接到主板的磁盘控制器。硬盘驱动器是一种存储设备，用于存储操作系统(OS)，已安装的软件和其他计算机文件。

HDD表示当我们的计算机系统关闭时，数据将保留。 HDD也称为固定磁盘，硬盘或硬盘驱动器。 HDD是IBM在1956年推出的。

第一台个人计算机包含的硬盘驱动器小于1兆字节，而现代计算机则包含1 TB的硬盘驱动器。具有外部硬盘驱动器的台式计算机用于备份或其他存储。

HDD和SSD之间的区别

HDD SSD
1. HDD is an abbreviation of Hard Disk Drive. 1. SSD is an abbreviation of Solid State Drive.
2. The time for reading and writing the data in HDD is longer. 2. The time for reading and writing the data in SSD is shorter.
3. There is a higher latency in HDDs. 3. There is a lower latency in SSDs.
4. Whereas, Hard Disk Drives supports fewer operations. 4. Solid State Drives supports the more operations of input/output per second.
5. The weight of HDDs is heavy. 5. Because the SSDs do not have a rotating disk and motor, the weight of these storage devices is light.
6. In the HDDs, the transfer of data is sequential. 6. In the SSDs, the transfer of data is not sequential.
7. Due to the mechanical movements, HDDs produce noise. 7. This storage device does not produce noise.
8. The size of the HDD devices is larger. 8. The size of the SSD is more compact.
9. The devices of Hard Disk Drives are cheaper. 9. As compared to Hard Disk Drives, Solid State Drives are more expensive.
10. In HDDs, magnets can remove the data. 10. SSDs are safe from the magnetic effect.
11. HDD devices generate more heat because of the mechanical part. 11. SDDs generates little heat because there is no moving part included.
12. HDDs require more power to keep all the parts moving. 12. It consumes less power than the HDDs.
13. The average boot-up time of OS is 30 to 40 seconds. 13. The average boot-up time of OS is 10 to 13 seconds.
14. The file opening speed of HDDs is slightly slower. 14. The file opening speed of SSD is 30% faster than the HDD.
15. Due to the spinning of platters may results in vibration. 15. As there are no moving parts, so there is no vibration.

硬盘驱动器(HDD)的优点

以下是硬盘驱动器的优点：

  • 硬盘驱动器的显着优点之一是其成本低。
  • 硬盘驱动器的另一个优点是它在市场上很容易获得。
  • 硬盘驱动器比光盘快。
  • 在HDD中存储数据的容量很大。

硬盘驱动器(HDD)的缺点

以下是硬盘驱动器的缺点或局限性：

  • HDD中的读写速度比RAM慢。
  • 硬盘很吵。
  • HDD的另一个缺点是能源效率低下。
  • HDD消耗更多功率。
  • HDD的尺寸要比SSD重。