VMware vSphere 6 Beta Foundations — Question 16

Which statement accurately describes cache tier sizing guidance for an all-flash vSAN cluster that will be supporting write-intensive workloads?

Answer options

• A. Multiple disk groups with larger cache devices should be used.
• B. Multiple disk groups with two cache devices per disk group should be used.
• C. A single disk group with a small cache device should be used to minimize de-staging write amplification.
• D. Two cache devices per disk group should be configured for redundancy.

Correct answer: A

Explanation

The correct answer is A because using multiple disk groups with larger cache devices allows for better handling of write-intensive workloads by providing more cache capacity. Options B and D suggest configurations that may not optimize performance as efficiently for write-heavy scenarios, while option C could lead to increased write amplification, which is undesirable for such workloads.