What is storage device How many types of storage device

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What is Storage Device?

This question must have been available in the minds of many at some time or the other, but even after searching plenty, detailed information isn’t available anywhere in English, thanks to which many people really know what is Data Storage Device and how many types are there. there’s no complete information about it.

As its name suggests, these are some such devices that are wont to store data or information digitally.

storage device

They are also alternatively known as digital storage, storage media, data-storage medium or storage device. These are some sorts of hardware devices that store data or information digitally and that too Temporarily or Permanently. Their main purpose is to store the info.

If we speak about computers, then these data storage are such places that store the info in electromagnetic and optical form so that the computer processor can access these data very easily when needed.

Then at once , allow us to know what is this storage device and what are their types.

What is a storage device?

As i’ve got already said that Storage Devices are those which store data and information temporarily or permanently as per the requirement. They store the info digitally.

A memory device is computer hardware that is used to store data safely, and use it as required. they will store information for the short-term or the long-term.

You can find these storage devices inside or outside the computer or server. At the identical time, these storage devices also are referred to as storage mediums or storage media.

It is a very important part of any computing device. At the identical time, they’re available in different sizes and types depending on their need and functionalities.

Types of Storage Devices

The storage devices used in computers are mainly of four types.  Let us now know about the different types of those storage devices.


1.   Primary Storage Device
2.   Secondary Storage Device
3.   Tertiary Storage Device
4.   Off-line Storage Device

Primary Storage Devices

  • These primary storage devices are also called main memory.
  • This is the direct memory that is accessible by the Central Processing Unit (CPU) that too via a memory bus.
  • These storage devices are volatile.
  • Their memory is temporary, that is, as soon as the device is switched off or rebooted, then their memory gets erased.



Secondary Storage Devices

These Secondary Storage Devices are storage devices that are not directly accessible by the Central Processing Unit.

  • In this, input and output channels are used to connect these types of storage devices with the computer. Because they are mainly external.
  • They are non-volatile and together they have more storage capacity as compared to primary storage devices.
storage device

  • This type of storage is permanent unless removed by an external factor.
  • Both internal and external memory is found in these.

ExampleHard disk

Tertiary Storage Devices

These Tertiary Storage Devices are not that important and often they are not even part of the personal computer.

  • It has often been found that a robotic mechanism is used in this which mounts or dismounts the removable mass storage media in a storage device.
  • Robotic functions are used in this type of storage device.
  • It does not require repeated human intervention and it is capable of doing its work automatically.
  • It is a comprehensive computer storage system that is very slow, so it is often used to archive data that is not frequently accessed.

Example :

Off-line Storage Devices

  • These offline storage devices are also called disconnected storage.
  • This is a computer data storage that is not under the control of the processing unit.
  • It has to be connected by a person before any computer can access it again.

This type of storage device is also called disconnected or removable storage.

Example : 

  • Floppy Disk
  • Zip diskette
  • USB Flash Drive
  • memory card

What is Cloud Storage ?

Cloud storage means that you store your data (be it photos or documents) on a server that can be accessed online from anywhere, rather than on your device.

What are some examples of Secondary Storage Devices?

Some examples of Secondary Storage Devices are SSD, Hard Disk, Optical Disk, Memory Card, Floppy Disk, Pen Drive etc.

what did you learn today

I have full hope that i’ve got told you what is a storage device and how many types are there? Gave complete information about and I hope you people have understood about Storage Device.

I request all of you readers that you simply also share this information in your neighborhood, with relatives, and your friends, in order that there will be awareness among us and everyone will benefit a lot from it. i want your cooperation so that I can pass on more new information to you guys.

It has always been my endeavor that I should always help my readers or readers from all sides, if you people have any doubt of any kind, then you’ll ask me without any hesitation.

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