Hard Disk (HD) Interview Question:

What you understand by a hard disk and how are they classified?

Submitted by: Murtaza

Hard drives are usually devices that can be used for storing data and to retrieve it. They are composed of one or more than one rigid disc that rapidly rotates.

★ The discs are magnetically coated and use magnetic heads to read and write data on them.
★ They are also known as the secondary storage devices used to store large amounts of data.
★ They can be classified into the following types : Non-Volatile, Digital, Magnetic or data storage devices.
★ Hard drives have been dominant since the use of personal computers as they allow large amounts of data to be stored at low costs and high reliability.
Submitted by: Murtaza