Ans. :- The properties of hard disk :-
- The hard disk drive is the main and usually largest, data storage devices in a computer.
- It can store anywhere from 160 gigabytes (GB) to 2 terabytes (TB).
- Hard disk speed is the speed at which content can be read and written on a hard disk.
- A hard disk unit comes with a set rotaion speed varying from 4500 to 7200 RPM.
- Disk access time is measured in milliseconds.