Which of the following statements are correct about a Hard-Disk Drive (HDD) used as a storage device in computers?
Statements: I: It has no moving parts.
II: It is non-volatile.
III: It uses magnetic properties to store data.

Correct option is C

• Statement I is incorrect: A Hard-Disk Drive (HDD) has moving parts, such as spinning platters and a read/write head. This differentiates it from a Solid-State Drive (SSD), which has no moving parts.
• Statement II is correct: HDDs are non-volatile, meaning they retain data even when the computer is powered off.
• Statement III is correct: HDDs use magnetic properties to store data. Data is written to and read from magnetized platters using a read/write head.

1. Information Booster:
   ● HDD has moving parts, making it more prone to mechanical failure compared to SSDs.
   ● Non-volatile storage ensures data is not lost when power is off, unlike RAM.
   ● Magnetic storage allows for high-capacity, cost-effective data storage.
   ● HDDs are commonly used for large storage needs, while SSDs are preferred for speed and durability.
   ● Regular maintenance, such as defragmentation, can optimize HDD performance.