What should you configure first to enable scale-out for a semantic model in a Microsoft Power BI Premium capacity?

• A. Set Large dataset storage format to On
• B. Enable data prefetch
• C. Increase memory for the capacity
• D. Turn on query caching

Answer: (A)

Scale-out in Power BI Premium depends on the dataset being stored in the Large dataset storage format. Turning this on enables the dataset to be distributed across multiple compute nodes, allowing queries to be processed in parallel and workloads to scale out. Other options like data prefetch, more memory, or query caching improve performance, but they don’t enable scale-out by themselves. So enabling the Large dataset storage format first is the essential prerequisite to support scale-out.