What Is RAID and How Can It Benefit You?

what is raid

Back then when hard drives are still extremely expensive, Redundant Array of Independent/Inexpensive Disks (RAID) is a life saver. But now, that hard drive with sufficient memory has become very cheap, and many new computer users don’t even know what RAID is.
RAID still holds an important role even in this modern day. So, let’s find out more about this just in case you can benefit from using this independent disk.

what is raid

What is RAID?

RAID was invented in 1988 when the price of the disk drive is still costly. The creators came with the idea because they thought that combining cheaper disk drives can more affordable and effective compared to using a single high-cost disk drive.
Multiple disks will result in faster and better performance. Furthermore, the array of redundancy also can make sure that the data can still be used when there is something wrong with a drive.

What are the Available RAID Versions?


There have been several versions of RAID in its development. The first one, RAID 0, was created to provide faster reading and writing speed as its primary goal. The main advantage of RAID 0 is its striping capability. The data is spread among available drives, and this is exactly the feature that makes faster reading and writing performance possible.

Despite its great advantage, RAID 0 still comes with a huge drawback. This version doesn’t come with duplicate capability, so the data is very vulnerable. All data will be compromised if one drive fails since the data is striped to various drives.


RAID 1 presents a much better improvement to RAID 0 because the newer version is fault tolerance. It consists of at least two drives that are mirroring each other. The data is completely the same and not divided like RAID 0. As a result, if one of the drives fails, the data is still saved as long as there is one drive that works correctly.

However, there is one big drawback. RAID 1 is considered very expensive since no matter how many drives you have, you can only store one disk-drive worth of data. The other drives are just back up so they must mirror the main drive.


RAID 5 combines the best features of both RAID 0 and RAID 1. This version comes with striping capability hence super-fast performance. But at the same time, it has fault tolerance as well thanks to the XOR logic which will collect parity information from other drives in case of drive failure. To support the system, RAID 5 needs at least three different disk drives.

Will RAID Benefit You?

Even though the cost of the disk drive is no longer a problem in this era, you can still gain plenty of benefits from using RAID. If you love playing games in your computer or you work with CAD and demanding video editing, this system can give you so many advantages, especially due to its speedy writing performance and the fault tolerance that will keep your data safe.

Further reading

About the Author: Editor

Leave a Reply

Your email address will not be published. Required fields are marked *