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Professional Azure SQL Database Administration

You're reading from   Professional Azure SQL Database Administration Equip yourself with the skills to manage and maintain data in the cloud

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789802542
Length 562 pages
Edition 2nd Edition
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Author (1):
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Ahmad Osama Ahmad Osama
Author Profile Icon Ahmad Osama
Ahmad Osama
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Table of Contents (11) Chapters Close

About the Book 1. Microsoft Azure SQL Database Primer FREE CHAPTER 2. Migrating a SQL Server Database to an Azure SQL Database 3. Backing Up an Azure SQL Database 4. Restoring an Azure SQL Database 5. Securing an Azure SQL Database 6. Scaling out an Azure SQL Database 7. Azure SQL Database Elastic Pools 8. High Availability and Disaster Recovery 9. Monitoring and Tuning Azure SQL Database 10. Database Features

DTU Pricing Models

Database Transaction Units

The amount of resources (CPUs, I/O, and RAM) to be assigned to an Azure SQL Database in a particular service tier is calculated in Database Transaction Units (DTUs).

DTUs guarantee that an Azure SQL Database will always have a certain amount of resources and a certain level of performance (offered under a particular DTU model) at any given point of time, independent of other SQL databases on the same Azure SQL server or across Microsoft Azure.

The ratio for the aforementioned resources was calculated by Microsoft by running an Online Transaction Processing (OLTP) benchmark.

The DTU amount signifies how powerful an Azure SQL Database is. For example, if a workload of, say, 5 queries takes 80 seconds on the Basic tier with 5 DTUs, then it'll take around 4 seconds on the Standard S3 tier with 100 DTUs.

There are four pricing tiers available in the DTU-based pricing model:

Note

The DTU is the measure of Azure SQL Database performance. This is discussed...

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