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

Introducing instance pools in SQL Managed Instance

Instance pools in SQL Managed Instance is a new deployment option and it's currently in the public preview phase. Instance pools allow you to run small compute managed instances in a pre-provisioned compute pool. This is a more cost-effective and convenient way of migrating small SQL Server instances to a managed instance.

Instance pools allow you to provision 2 vCore instances inside a pre-provisioned pool. If you have provisioned an 8 vCore instance pool, you can deploy four 2 vCore SQL managed instances in that pool. Prior to instance pools being available, smaller instance databases needed to be consolidated during migration to the cloud, which required careful capacity planning, resource governance, and security considerations.

Figure 8.23 shows a high-level overview of an instance pool and a managed instance deployed within a virtual network subnet:

A high-level overview of an instance pool and a managed instance deployed within a virtual network subnet

Figure 8.23: High-level overview of an...