The Portable Hard Disk is a very durable and portable external hard drive that is perfect for keeping important documents and files on the go. This hard drive is perfect for those who want a high-quality product that is reliable and functional. Portable or external hard disk drives are dominant secondary storage devices for storing digital information that is usually pre-assembled or assembled by combining an external enclosure. These are available in two different sizes variants, 2.5-inch are typically known as portable external hard drives and 3.5-inch are known as desktop external drives. The concept of secondary storage was first introduced by IBM in the year of 1956. Over the passage of time it improves and in March 2015 it achieved the capacity volume from 500GB to 1TB.
A Hard Disk Suitable For Use Anywhere Is Called A Portable Hard Disk. A Portable Hard Disk Is A Portable Hard Disk That Is Used With A Cable By Inserting The Hard Disk Of A Laptop Or Desktop Into Another Casing.
| Parameter Of Comparison | HDD | SSD |
| Meaning | Type Of Drive Which Uses Magnetic Tape To Store Data | Type Of Drive Which Uses Flash Memory To Store Data |
| Energy Consumption | More | Less |
| State Of Technology | The Old Or Traditional Way Of Storage | A New Or Modern Approach |
| Durability Perspective | Less Durable | More Long-Lasting |
| Impact On Computer’s Cooling | More Energy Consumption Makes The Computers Turn Hot | Allows Computers To Remain Cool As They Use Less Energy |
| Cost Perspective | Less Expensive | More Expensive |
| Storage Space | More | Less |
| Loading Time | Slow As Compared To SSD | High, Faster |
| Impact On Computer’s Cooling | More Energy Consumption Makes The Computers Turn Hot | Allows Computers To Remain Cool As They Use Less Energy |
Here, are pros/benefits of using HDD:
The hard disk is made up of a number of spinning magnetic platters that store data and a number of reading/write heads on mechanical arms that move on the surface of the platters.
To read or write data at a certain sector of a platter, the head requires to move to the appropriate position and then need to wait for the sector to pass underneath it when the platter rotates
