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

Optimize backup storage costs for Azure SQL Database and Azure SQL Managed Instance

Backup storage costs depend on the provisioned database pricing tier and type. For the DTU model, the Azure SQL Database backup storage cost is included in the pricing tier. With the vCore model, Microsoft gives you free backup storage, which is equal to the size of your maximum provisioned database storage or reserved maximum storage for Azure SQL Managed Instance. For example, if you have a 100 GB standard Azure SQL database, you get 100 GB of free backup storage, and the same applies to the reserved total space for Azure SQL Managed Instance. You can control the free backup storage size by limiting the retention period of backups.

For single databases, this equation is used to calculate the total billable backup storage usage:

Total billable backup storage size = (size of full backups + size of differential backups + size of log backups) - maximum data storage

For pooled databases, the total...