Computer manufacturers often stress performance and availability in their marketing literature. Yet, reliability (R), availability (A), and scalability (S) are the three pillars that support mission-critical applications, and they all need appropriate attention.
The elements of RAS are complimentary measures, but they are not the same. This article looks at the three pillars from a modern perspective.
Article (Part 1):
A Modern Look at Reliability, Availability, and Scalability – Part 1