Refer to the exhibit.

Detailed Explanation:

Rationale for Correct Answer:

Frequent cache misses occur when the working dataset does not fit effectively in cache. Increasing the flash-to-disk ratio ensures a higher portion of hot data is served from flash media rather than backend disk, reducing cache miss penalties. This is the standard HPE recommendation for read-intensive workloads where cache is insufficient.

Distractors:

A: Adding shelves adds capacity, not cache-to-data efficiency.

B: Upgrading controllers increases CPU, but not necessarily cache efficiency.

C: Pinned cache is intended for metadata or specific workloads, not large-scale read caching.

Key Concept: Flash-to-disk ratio optimization reduces cache misses.