Database Throughput Units

Randolph West looks at the Azure Database Throughput Unit Calculator:

The DTU Calculator, a third-party service created by Justin Henriksen (a Microsoft employee), will calculate the DTU requirements for our on-premises database that we want to migrate to Azure, by firstly capturing a few performance monitor counters, and then performing a calculation on those results, to provide the recommended service tier for our database.

Justin provides a command-line application or PowerShell script to capture these performance counters:

  • Processor – % Processor Time

  • Logical Disk – Disk Reads/sec

  • Logical Disk – Disk Writes/sec

  • Database – Log Bytes Flushed/sec

For more details on DTUs, John Sterrett looks at the math.

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