Excellent post by Scott Alan Miller (thank you)
Choosing a RAID level is an exercise in balancing many factors including cost, reliability, capacity, and of course, performance. RAID performance can be difficult to understand, especially as different RAID levels use different techniques and behave rather differently from each other in some cases. In this article, I want to explore the common RAID levels of RAID 0, 5, 6, and 10 to see how performance differs between them.
Read on here