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VCP550 · Question #68
VCP550 Question #68: Real Exam Question with Answer & Explanation
The correct answer is B: Web Server virtual machines. vFlash Read Cache benefits workloads with highly repetitive, read-intensive access patterns, and web servers serving static content represent the ideal use case due to their predictable, cache-friendly I/O profile.
Question
An administrator needs to configure vFlash Read Cache to improve performance. What would benefit the most from enabling vFlash Read Cache?
Options
- AVirtual machines replicated with vSphere Replication
- BWeb Server virtual machines
- CDatabase virtual machines
- DVirtual machines migrated using Storage vMotion
Explanation
vFlash Read Cache benefits workloads with highly repetitive, read-intensive access patterns, and web servers serving static content represent the ideal use case due to their predictable, cache-friendly I/O profile.
Common mistakes.
- A. VMs using vSphere Replication are involved in asynchronous data replication for disaster recovery, a data-movement workload that does not produce the repetitive read patterns vFlash Read Cache is designed to accelerate.
- C. Database VMs often have large working sets that exceed flash cache capacity and involve significant write I/O, making their read cache hit rates lower and less consistent than a web server workload.
- D. Storage vMotion is a one-time migration operation that sequentially reads and writes VM storage, not a steady-state repetitive read workload that benefits from caching.
Concept tested. vFlash Read Cache workload suitability selection
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