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Storage Devices

By Sai Rohith Karanam

What is a storage device?
A storage device is a physical component that records data and holds it persistently.

There are many storage devices that can be supported by the Linux operating system. Some of the most common ones include:
  1. Hard disk drive (HDD): Electromechanical devices that use magnetic technology to store data, usually in large amounts.
  2. A solid-state drive (SSD): Storage device that uses non-mechanical solid-state technology to store data, usually in large amounts. They tend to support much quicker access times than HDDs.
  3. USB thumb drive: Portable storage devices that use flash memory technology to store data, usually in small amounts compared to HDDs and SSDs.Their small size makes them easy to move around.
  4. External storage drive: Portable storage devices that use one of many several technology types. They usually connect to a computer through a peripheral interface like USB, rather being an internal component.
Although these are the most common storage devices you will be working with, you might also be responsible for working with legacy technology like Floppy disk drive (FDD), tape drives etc

Note: The term 'disk' and 'hard drive' are often used to refer to all storage devices generally. Even some Linux tools do this. However, not all storage devices use hard disk technology.

Linux refers to any storage device as either a block device or character device

 Block device: These are the storage devices (HDD, SSD etc) that can be read from and write to in blocks of data.

Character device: These are the devices like keyboards, mice, serial ports etc that can be read from and write to in streams of data

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