What are Fault Domains designed to do?

Fault Domains are specifically designed to isolate failures within segments of infrastructure to enhance overall system reliability and availability. By defining these domains, organizations can safeguard critical resources against the cascading effects of hardware or software failures. When a fault occurs within one domain, it does not impact the entire system, allowing for continued operation and minimizing downtime. This strategic segmentation ensures that issues can be contained and managed more effectively, ultimately leading to a more resilient architecture.

The other options, while important aspects of infrastructure management, do not accurately reflect the primary purpose of Fault Domains. Enhancing system performance and increasing network speed and reliability are beneficial outcomes of effective design but are not the main goal of Fault Domains. Similarly, while reducing infrastructure size might be a consideration in other strategies, it does not relate directly to the functionality of isolating faults. Thus, focusing on the isolation of failures is crucial for maintaining operational integrity and service availability.