Know What Is A Computer Hard Disk Drive (HDD). Types of HDD: Hard Drive Type PATA / Hard Disk Type Serial ATA (SATA) / Small Computer System Interface (SCSI) Hard Disk. Difference between HDD and SSD.

Ten years ago we may have asked how we can store hundreds or even thousands of files on a laptop or computer. This can be done in the presence of a Hard Disk Drive (HDD).

Hard disks were invented about 50 years ago. Previously, hard disks have been used in computer devices since the 1980s.

Table of contents

  • Definition of HDD
  • Types of HDD
    • 1. PATA Type Hard Drive
    • 2.Serial ATA (SATA) Type Hard Disk
    • 3.Small Computer System Interface (SCSI) Hard Disk
  • Difference between HDD and SSD

Definition of HDD

What is HDD

Even though we often use and are close to us, it is not certain that we really understand what HDD is? So let’s discuss it one by one.

HDD or Hard Disk Drive is one of the hardware used to store data on a laptop or computer. The operating system, software and various files on our laptops are stored on the hard disk drive.

Windows users may be familiar with the name drive C. The default drive used by Microst Windows. Drive C is the main hard drive partition on the computer.

Usually in use there are several drives other than Drive C, such as Drive D and Drive E. This partition division functions so that when the laptop is damaged and must be installed. Files that are not on drive C will not be lost.

There are various types of hardware that have been produced, of course depending on the type of computer. One of the physical characteristics of a hard drive is the space available on the PC, the speed required for data transfer, and the amount of storage space required.

There are various types of hard disks such as PATA, SATA, and SCSI, which are three types of hard drives that are quite often used in computers.

Types of HDD

HDD type

It’s incomplete if we want to know what HDD is without getting to know it more deeply, so in this article let’s discuss one by one the types of computer hard disks.

1. PATA Type Hard Drive

PATA (Parallel Advwnce Technology Attachment) is a drive which is also known as Integrated Drive Electronics (IDE) and Enhanced Integrated Drive Electronics (EIDE).

This label corresponds to the type of interface used to connect the disk drive to the CPU board. This type of drive uses a 40 or 80 kael wire with a 40-pin connector.

The 40 wire cables were used in older and slower hard disks, while the 80 wire cables were used to make them faster. But now, PATA type hard disks have been replaced by SATA hard disks.

2.Serial ATA (SATA) Type Hard Disk

This type of hard disk uses a different connector than PATA. The power adapter used is different from the IDE. There are major differences between the two types of hard disks. SATA is thinner and has a faster data interface than PATA.

However, the difference in speed between PATA and SATA drives cannot be distinguished if they have the same RPM. SATA drives are more efficient because in addition to being faster they also use less power.

3.Small Computer System Interface (SCSI) Hard Disk

This type is almost similar to an IDE hard drive. However, it has a higher playback rate when compared to SATA or IDE. IDE Drives and SATA Drives typically spin at speeds of 7,200 rpm, while SCSI drives are capable of spinning at speeds of 10,000 rpm to 15,000 rpm.

With a higher RPM, data access can be done even faster. However, this causes damage to the hard disk to become damaged more quickly. SCSI hard disks require an able to operate the interface between the DVD and the motherboard on the computer.

Difference between HDD and SSD

Difference between HDD and SSD

Talking about hard disks, there are terms that we often encounter, besides the term HDD there is also the term SSD, now for more details, let’s talk about the differences between the two types. SSD stands for Solid State Drives.

HDD is a hard disk with a type of moving component, while SSD uses semiconductor components to perform its function as data storage.

SSDs run much faster and are more resistant to damage. However, with this capability, SSDs are priced more expensive than HDDs.

Also Read: Cheapest SSD hosting storage

It cannot be denied that the cheaper HDD prices make it have disadvantages when compared to SSDs. Some of the drawbacks are that HDDs require more power, have a higher risk of damage than SSDs, and are not able to work as fast as SSDs.

In recent years, HDD manufacturers have developed HDD technology in order to be able to continuously store more data on the hard drive platters.

HDD manufacturers compete by taking advantage of a larger size of space. The technique used is to replace the air in the drive with helium. This reduces friction and thus supports a larger area.

Another technology that is being developed is the use of magnetic recorders using hot rock, or what is called (HAMR). It is hoped that with the help of thermal lasers the drives will eventually be able to store up to 20 terabytes.


Hopefully this article can help answer the questions of many people about what HDD is. Today where data storage devices start to be sophisticated there may be many types that will be developed which are much more sophisticated.

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