Azure SQL Databases – DTU or vCore

Azure SQL Databases – DTU or vCore

DTU or vCore? That is the question.

When they first came as an offering a long time ago, Azure SQL Databases always had a mystery attached to them regarding the performance tier you should use.

DTU

Database Throughput Unit or DTU is a way to describe the relative capacity of a performance SKU of Basic, Standard, and Premium databases. DTUs are based on a measure of CPU, memory, I/O reads, and writes. When you want to increase the “power” a database, you just increase the number of DTUs that are allocated to that database. A 100 DTU DB is much more powerful than a 50 DTU one.

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