Which architecture is optimized for block I/O in SANtricity?

Which architecture is optimized for block I/O in SANtricity?

• A. Loosely coupled controller design
• B. Tightly coupled symmetric active-active
• C. Single-controller JBOD design
• D. Scale-out file system

Answer: (B)

For high-performance block I/O in SANtricity, the architecture that fits best is a tightly coupled symmetric active-active setup. In this arrangement, both controllers operate as equal partners, processing I/O in parallel, sharing a common cache, and balancing load in real time. Presenting a single, coherent storage view to hosts, this design delivers higher IOPS, lower latency, and robust failover because either controller can continue serving requests without service interruption. Why the other options aren’t as suitable: a loosely coupled design doesn’t coordinate cache and I/O as closely, which can cause bottlenecks and uneven performance under heavy block workloads. A single-controller JBOD design provides no controller-level redundancy or parallelism, limiting throughput and resilience. A scale-out file system targets distributing files across nodes for scalability at the file level, not optimizing block I/O paths inside the SANtricity array. So, the tightly coupled symmetric active-active architecture is the setup that best optimizes block I/O.

For high-performance block I/O in SANtricity, the architecture that fits best is a tightly coupled symmetric active-active setup. In this arrangement, both controllers operate as equal partners, processing I/O in parallel, sharing a common cache, and balancing load in real time. Presenting a single, coherent storage view to hosts, this design delivers higher IOPS, lower latency, and robust failover because either controller can continue serving requests without service interruption.

Why the other options aren’t as suitable: a loosely coupled design doesn’t coordinate cache and I/O as closely, which can cause bottlenecks and uneven performance under heavy block workloads. A single-controller JBOD design provides no controller-level redundancy or parallelism, limiting throughput and resilience. A scale-out file system targets distributing files across nodes for scalability at the file level, not optimizing block I/O paths inside the SANtricity array.

So, the tightly coupled symmetric active-active architecture is the setup that best optimizes block I/O.