Hey there, MicroMarx!
Yes, RAID 0 has the highest failure rate out of all RAID configurations.
It's called striping and even though you get very high speed and use the full capacity of the storage, if one SSD/HDD fails it takes out the whole array.
The safest RAID configuration is RAID 1, it's called mirroring because it writes to two drives at the same time and the data is duplicated. It provides the highest reliability, because if one drive fails you can still use the other one until you replace it. Once a new drive is added, it starts rebuilding the array and again duplicates the contents from the working drive.
Though it won't increase the performance as much as RAID 0, it's definitely reliable. Keep in mind, that RAID systems...