Improving Availability via Staggered Systems
The Connection, by Dr. Bruce D. Holenstein, Dr. Bill Highleyman, and Paul J. Holenstein
The reliability of a redundant system is optimized by minimizing the probability that both systems will fail...
Research and Theoretical Topics
Improving Reliability via Redundant Processing
The Connection, by Dr. Bruce D. Holenstein, Dr. Bill Highleyman, and Paul J. Holenstein
One of the three pillars of mission-critical systems is data reliability – a significant concern in datacenters...
Scale-up is Dead, Long Live Scale-out!
The Connection, by Keith B. Evans and Paul J. Holenstein
Keeping up with user demand is a significant challenge for IT departments. The traditional scale-up approach suffers from significant limitations and cost issues that prevent...
A Modern Look at Reliability, Availability, and Scalability
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...
The Benefits of Switching from Scale-up to Scale-out Architectures
Keeping up with user demand and managing a service outage or brownout is a significant challenge for IT departments. The traditional scale-up approach suffers from significant limitations and cost issues that prevent it from satisfying the ever-increasing workloads of a 24×7 online society...
