What is RAID? | Quick Tech #5

Raid may be confusing for many people that are just entering the server world. After you understand it is very simple. Lets get started.

Raid stands for a Redundant Array of Inexpensive Drives. With RAID you can do many thing great for your server that 1 drive can’t do. There are also many types due to this reason. The most common for consumers and non professionals are RAID 0, RAID 1,  and RAID 10. There are many others that aren’t mentioned like RAID 2,3,4,5,6,etc.

RAID 0

This type of RAID requires at least 2 drives. In this method when you write to the array half of the data is stored in 1 drive and the other half on the second drive. This makes read and write speeds much faster since only half is going to one drive. An example will be having two 3 TB hard drives and putting them in RAID 0. Then you will have double the read and write speeds. The only problem is that if 1 drive dies or fails then all data is lost. This is because you need both of the data and so if you only have 1 side of it you can’t get your data back.

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RAID 1

This also requires 2 drives. In this method you write the data on both drives. This way if 1 drive fails then you have the other drive with all of your data. This wont double storage but you won’t lose data.

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RAID 10

This method requires 4 drives. In RAID 10 you have a combination of RAID 0 and RAID 1. It stripes the data to 2 drives and then the 2 drives duplicates those drives so if 1 of the drives fail you can still sue the other one to read the data. This costs much more because of the number of drives needed.

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Conclusion

Well this really doesn’t need a conclusion but I hope you now understand what RAID is and how it works. Be sure to check out the PC build article and the Sony HDR 200V review and video coming soon.

PC BUILDS WILL BACK! Starting April there will be PC builds only once or twice a month! April’s PC build is already planned and built so be sure to check it out.

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