RAID 0 - RAID 0 is for the people who want the best performance and are willing to sacrifice drive safety in order to implement it.This version of RAID takes your drives and puts them in a single volume, instead of having two 1.5 TB drives, you get one 3 TB volume. This sounds like it wouldn’t do anything until you realize that this sounds similar to dual channel memory. Instead of putting in and taking what you are doing out of a single drive, it takes half of each and puts it in or takes it out of both drives. While this does not always double the performance, it will make it much faster and for people who just want the fastest storage, it could be worth it. In order to implement RAID 0, you must have at least two drives. The main downside of this form of RAID is that if one drive fails, both fail, with no way to recover that data because there is no redundancy. Because of this, it is not advisable to to use this on the drive that your operating system is on.
RAID 1 - This nearly the opposite of RAID 0. It is for the people that need their data at all costs and are willing to sacrifice half of their total storage for it, although it does not change read or write speed in any dramatic way, it does make write speeds slower. RAID 1 needs at least two drives in order to be implemented. It takes your data and duplicates one drive, onto another one; this makes it to where you cannot use that drive for anything except redundancy. This makes it to where if one drive fails, there is always a back up that the drive can be rebuilt off of.
RAID 5 - This is the version of RAID that most people would benefit from the most. It takes the data and splits part of it across each of the three or more disks that is needed, while also repeating parts of data across all drives. This means that not much total storage is lost, and it increases performance, although not as much as RAID 0. RAID 5 is the most common version of RAID because it has a good balance of safety and speed. Even if one drive fails, it can be rebuilt; the only danger in this is that if another drive breaks while this is happening, all storage is lost.
RAID 10 - This is a combination of RAID 1 and RAID 0, hence the name RAID 10. It takes your data and repeats it across all disks, and takes data out of multiple disks at once as well, but since it has to put the same data across all disks, right performance is decreased and the total storage available is cut in half due to the mirroring of data. With that being said, it is very fault tolerant and is one of the safer forms of RAID. The minimum number of disks needed in order to have it is 4 so it is going to be pretty expensive, but for some people it would be the right option to use.