Hard disk (or Hard Disk Drive - HDD) is a type of data storage device used to store data on a computer. It is a storage device that uses mechanical and electrical points to store and retrieve data.
Main components of a Hard Disk:
1. Platter: A round metal point with a platinum coating that is used to store data.
2. Read/Write Head: Used to read and write data to the Platter.
3. Spindle: Used to rotate the Platter to read/write data.
4. Actuator Arm: Guides the Read/Write Head to the location where the data is located.
5. Controller Board: A board that controls the operation of the Hard Disk and connects it to the computer.
Main features:
- Data storage capacity: Hard Disks have a large data storage capacity (GB, TB).
- Low power consumption: They do not use much power.
- Read/write speed: Average speed, but slower than SSD (Solid State Drive).
Types:
1. Internal Hard Disk: HDD installed in a computer.
2. External Hard Disk: HDD that is connected externally via USB or other companies.
Advantages:
- More affordable than SSD.
- More storage capacity.
Disadvantages:
- Access data slower than SSD.
- Can be easily damaged if subjected to a lot of impact.
Hard Disk is an important part of a computer to store data such as OS, documents, programs, and other data.