A global services team asks about Azure Private DNS zone scalability before they consolidate 30,000 hosts into a single zone. What are the documented practical limits they should consider for a single Azure Private DNS zone regarding maximum virtual network links and maximum record sets (record sets = distinct DNS record names)?
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Correct answer: Maximum virtual network links per private DNS zone = 1000; maximum record sets per zone = 10,000.
Why this is the answer
The correct answer aligns with Azure's documented Private DNS zone limits. A single Azure Private DNS zone supports a maximum of 1,000 virtual network links and 10,000 record sets. These limits are crucial for planning large-scale deployments like the consolidation of 30,000 hosts. The other options are incorrect because they either state limits that are too low (e.g., 10 or 100 virtual network links, 1,000 record sets) or too high (e.g., 100,000 record sets), or incorrectly claim unlimited scalability. Understanding these practical limits is essential for designing resilient and scalable DNS solutions in Azure.
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