What is a Storage Device and how many types?

What is a storage device? This question may have come to the mind of many at some time or the other, but even after searching a lot, detailed information is not available anywhere in Hindi, due to which many people know what the Data Storage Device is and how many types it has. There is no complete information about it. As its name suggests, these are some devices (devices) that are used to store data or information digitally.

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

If we talk about computers, then these data storage are such places that store the data in electromagnetic and optical form so that the computer processor can easily access these data when needed. Then without delay let us know what is this storage device and what are their types.

As I have already said that storage devices are called those which store the data and information termporarily or permanently according to the need. They store data digitally.

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The storage device used in computers is mainly of two types.

1. Primary Storage Device
2. Secondary Storage Device

Here, if I talk about Primary Storage Device in Hindi, then their memory is temporary, or which is also called volatile. With this they have limited memory. For example, RAM.
On the other hand, if I talk about Secondary Storage Device in Hindi, then their memory is permanent. With this, they can store large amounts of data. For example, Hard Drives.
Why Secondary Storage Devices are more used?

Secondary storage devices are more used because:
1. The memory (RAM) of Primary Storage is volatile and temporary. As soon as the computer is shut down, all the data which is in RAM also gets erased.

2. Secondary storage devices store very large amounts of data and instructions permanently, where primary memory has a very small capacity to store data.

3. A special feature of secondary storage is that it can be removable, internal, and external storage as well.

Local Storage Types
1. External Hard Drive
This is similar to those hard drives that have been installed in your desktop computer and Laptops. The main difference in them is that you can plug them into the computer, or you can remove them and or you can also keep them separate from the main computer. It is mainly found in two sizes:

Desktop External Hard drive: which is about 3.5 inch and used in desktop computers.

Portable External Hard drive: which is about 2.5 inch and used in Laptops.

Desktop External Hard Drives are often cheaper as compared to Portable External Hard Drives based on the same storage space. With this, they are also faster and stronger than Portable External Hard Drives.

Capacity: Their capacities range from 160GB to 3TB (approx 3000GB).

Connection: It connects the computer via USB 2.0 or USB 3.0 connection. With this, it is also available in SATA or eSATA connector.

Advantages:
1. This is a very good option for local backups where there is large amounts of data.

2. This is the cheapest option for storage if we talk about dollars per GB. With this it is very reliable if it is handled correctly.

Disadvantages:
1. It is very delicate. It can be very easily damaged if it is dropped somewhere or below the voltage of electricity.

2. Solid State Drive (SSD)
Solid State Drives are very similar in appearance and functioning like traditional mechanical / magnetic hard drives. But internally, it is completely different. There are no moving parts or rotating platers in them. They solely depend on semiconductors and electronics for data storage which makes it more reliable and robust than traditional magnetic hard drive. Due to the lack of moving parts here, they use less power than traditional hard drives and work very fast.
As we know, the price of Solid State Drives is getting reduced day by day and due to its lower power usage, SSD’s are being used in laptops and mobile devices in large quantities nowadays. With this External SSD’s is a very good option for data backups.

Capacity: 64GB to 256GB

Connections: USB 2.0 / 3.0 and SATA

Advantages:
1. This very Faster read and write.
2. It is more robust and reliable compared to traditional magnetic hard drives
3. It is highly portable. So it can be easily transported from one place to another.

Disadvantages:
1.It is more expensive than traditional hard drives.
2. Storage space in it is also very less compared to traditional magnetic hard drives.

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