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

Summary

Azure SQL Database and SQL Managed Instance have different purchasing options and service tiers to support varying workloads. SQL Database has two purchase options, DTU and vCore, while SQL Managed Instance is only available with the vCore model. The DTU purchasing option measures performance in DTUs. A DTU hides the complexity of measuring performance in terms of CPU and memory and provides a simple way of measuring performance. It's good for teams that don't have specialized DBAs and for new databases/applications where we don't have historical performance metrics for the database.

The vCore model is more similar to an on-premises SQL Server wherein we get to choose compute (vCore) and storage separately. It's best for teams with specialized DBAs and for migrating on-premises workloads to Azure (where we have historical performance metrics for the database).

We also looked at different service tiers for each purchasing model and underlaying architecture model differences and use cases.

We learned how to use DMA to get SKU recommendations when migrating an on-premises SQL workload to SQL Database or SQL Managed Instance.

In the next chapter, we'll learn about techniques and considerations to migrate an on-premises SQL Server database to Azure SQL managed database offerings.