Hello, friends in this tutorial we are going to discuss what is RAID technology, why it is used and what are its different types.
In this tutorial, we will discuss RAID 0, RAID 1, and RAID 10. These are the types which are most commonly used and are very easy to implement and understand.
So let’s dive right into it.
What does RAID stand for?
RAID stands for Redundant Array of Independent Disks or Redundant Array of Inexpensive Disks.
Now, this is one of the technologies that are used on the storage devices. This RAID technology is basically implemented to improve reliability and performance of the storage devices.
Why is RAID used?
Most of us use a single hard drive on your computers and we are completely reliant on that single hard drive for the storage of our data. If that hard drive gets corrupted or something else damage happens to it then our data will be lost.
And nowadays the data is one of the most crucial parts of our lives which we can’t afford to lose.
The speed of that single hard drive for copying or moving files will be the same as per the limit of that particular hard drive. You can’t get past the limited threshold using that single hard drive.
But when we use RAID instead of completely dependent on a single hard drive for our data we use multiple hard drives for increasing the reliability and the performance of our storage device.
What are the types of the RAID?
Now RAID also comes in various types. From RAID 0, RAID 1, and up to RAID 10.
Different type of RAID is used based on the scenario. Consider if you have 5 hard drive and you want to implement RAID technology then you need to figure out in which arrangement should you put those hard drives in order to get what you want.
In other words, what is the best possible arrangement of the available hard drive which will give you the best performance and also the increased reliability?
To understand this let us consider an example that you have two hard drive and you want to store data on them. The data will then be stored in parts on those drives.
This results in the increased read and writes speed which is because you are not totally dependent on one hard drive to get your data. You can independently gather data from those two hard drives which means you get better performance.
But if any of those two hard drives get damaged or gets corrupted then all your data will be lost.
In this type, you simply divide the available hard drive into two equal pairs. Suppose you have 4 hard drives then you 2 pairs of 2 hard drives each or if you have 6 hard drives then 2 pairs of 3 hard drives each.
In this case, instead of dividing the data into multiple parts and storing into different hard drive what you generally do is create a copy of data of one pair of the hard drive onto another.
Now you certainly won’t see any improvements in the performance of the hard drives. But it does offer you high reliability in case you lost your data from one pair of the hard drive then also you’ll be able to access the data from another pair.
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This is the combination of RAID 1 and RAID 0. Now in this case you have the improved performance and as well as improved reliability. Since you implement both the RAID types at the same time.
For implementing RAID 10 the minimum requirement is 4 hard drives i.e. is 2 pairs of hard drives having 2 hard drives each pair.
That is storing the data into parts which results in improved read-write speed and storing the backup of that data on another pair of the hard drive which acts as a backup of your original data which results in better reliability.
So that was all about what is RAID and how it is implemented. If you would like to read about other RAID types then you can visit this link searchstorage If you have any query or suggestion feel free to comment down below and if you liked the article please share it with your friends.