Meaning of hard disk (what is it, concept and definition)

What is Hard Drive:

Hard disk is a data storage device. Hard disk comes from the English hard disk and is one of the components of the memory system that computers have to store information.

A hard disk is characterized in that it does not need an electrical current to store data and therefore it is the device in charge of storing long-term data and starting the computer. When the hard drive is inside the computer they are called an internal hard drive.

There are four types of hard drives:

• SSD: Solid State Drive or solid state drive have a composition similar to that of flash memory and USB memory. SATA III: These are hard drives called hard drives located inside the computer made up of several disks that store information magnetically. To read the information contained, the disks must rotate at high speed while a 'playhead' reads the information. SCSI: They are for more professional use and are generally several in a rack. SAS: It is a more modern version of the SCSI hard disk.

The external hard drive complies with the same logic as the one inside the computer (SATAIII) but is not part of it, having a case for protection and transport and it is generally connected via a USB ( Universal Serial Bus ) connection.

The SSDs are the latest technology in portable hard disk and have the following characteristics:

• They are silent They are faster They consume less They are more resistant