Book Image

Professional Azure SQL Managed Database Administration - Third Edition

By : Ahmad Osama, Shashikant Shakya
Book Image

Professional Azure SQL Managed Database Administration - Third Edition

By: Ahmad Osama, Shashikant Shakya

Overview of this book

Despite being the cloud version of SQL Server, Azure SQL Database and Azure SQL Managed Instance stands out in various aspects when it comes to management, maintenance, and administration. Updated with the latest Azure features, Professional Azure SQL Managed Database Administration continues to be a comprehensive guide for becoming proficient in data management. The book begins by introducing you to the Azure SQL managed databases (Azure SQL Database and Azure SQL Managed Instance), explaining their architecture, and how they differ from an on-premises SQL server. You will then learn how to perform common tasks, such as migrating, backing up, and restoring a SQL Server database to an Azure database. As you progress, you will study how you can save costs and manage and scale multiple SQL databases using elastic pools. You will also implement a disaster recovery solution using standard and active geo-replication. Finally, you will explore the monitoring and tuning of databases, the key features of databases, and the phenomenon of app modernization. By the end of this book, you will have mastered the key aspects of an Azure SQL database and Azure SQL managed instance, including migration, backup restorations, performance optimization, high availability, and disaster recovery.
Table of Contents (14 chapters)
13
Index

2. Service tiers

Azure provides multiple service (performance) tiers for Azure SQL Database and SQL Managed Instance. There are two purchasing options, the Database Transaction Unit (DTU) model and the vCore model. Each purchasing option has multiple service tiers. The purchasing option and service tier define the performance and cost of an SQL managed database. In this chapter, we'll look at the different purchasing options and service tiers and learn how to choose an appropriate starting performance tier when migrating to an SQL managed database.

We will learn about:

  • DTUs and the vCore purchasing model
  • Different service tier options for SQL Database and SQL Managed Instance
  • Using Data Migration Assistant (DMA) to get service tier recommendations when migrating an on-premises SQL Server workload to SQL Database and SQL Managed Instance

Let's get started with understanding the DTU model.