EMC Proven Professional – XtremIO Solutions Expert — Question 1

On a VMAX3 array, under which type of workload will Selective Cache Mirroring provide significant performance optimization?

Answer options

• A. Large block Write Miss I/Os
• B. Small block Write Hit I/Os
• C. Large block Read Miss I/Os
• D. Large block Read Hit I/Os

Correct answer: A

Explanation

Selective Cache Mirroring is designed to optimize performance primarily for workloads that consist of Large block Write Miss I/Os, as it helps to reduce latency and improve throughput for these types of operations. The other options, such as Small block Write Hit I/Os, Large block Read Miss I/Os, and Large block Read Hit I/Os, do not experience the same level of benefit from this feature, as they are either different types of I/O operations or already optimized in other ways.