Practice question 43 of 180 · hard
A provisioned v2 share has enough capacity and throughput, but measured random I/O demand exceeds its sustainable provisioned IOPS every morning for several hours. Which sizing change best addresses that constraint?
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✓ Correct answer
- Provision IOPS for the measured sustained demand
Sustained I/O peaks need a sustainable performance budget. Provisioned v2 separates IOPS from capacity and throughput, so adjust the measured constraint. Option explanations: A. Add unused capacity solely to force v2 IOPS to rise: Provisioned v2 selects capacity and IOPS independently; size the constrained performance component directly. B. Provision IOPS for the measured sustained demand: Long demand above the provisioned level cannot be assumed to remain within burst credits indefinitely. C. Use bandwidth guidance per user as a storage IOPS guarantee: RDP network guidance does not establish profile I/O demand. D. Rely indefinitely on a full burst-credit bucket: Credits decline when demand exceeds provisioned IOPS and can be exhausted. Sources: Azure Files guidance for virtual desktop workloads — https://learn.microsoft.com/en-us/azure/storage/files/virtual-desktop-workloads; Understand Azure Files billing — https://learn.microsoft.com/en-us/azure/storage/files/understanding-billing
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