Ive been adding allot of content recently. My newest addition is RAID. In the beginning, I found it hard to grasp what RAID was and eventually managed to wrap my head around it. There are different types of RAID used for different types of reasons, for example: Using RAID 0 would purely be for performance purposes.
These videos best explains it in an easy way.
To watch these videos, go to Networking and you fill find the RAID option there.