The document discusses approaches to scaling information systems to ensure high performance. It describes scaling up, which involves increasing server resources, and scaling out, which involves adding new database nodes and load balancing. It then evaluates two variants for clustering Microsoft SQL servers - a common model using failover clustering, and AlwaysOn technology which replicates databases across nodes. An innovative data cluster solution is proposed that uses AlwaysOn to analyze requests and distribute load optimally across master and secondary nodes, increasing fault tolerance and availability. Load testing results show near linear performance scaling with additional nodes. Implementation in a large e-commerce company saw over 50% load redirected during peak periods, improving system quality and response.