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Professional Azure SQL Managed Database Administration

You're reading from   Professional Azure SQL Managed Database Administration Efficiently manage and modernize data in the cloud using Azure SQL

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781801076524
Length 724 pages
Edition 3rd Edition
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Authors (2):
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Ahmad Osama Ahmad Osama
Author Profile Icon Ahmad Osama
Ahmad Osama
Shashikant Shakya Shashikant Shakya
Author Profile Icon Shashikant Shakya
Shashikant Shakya
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Table of Contents (14) Chapters Close

Preface 1. Introduction to Azure SQL managed databases 2. Service tiers FREE CHAPTER 3. Migration 4. Backups 5. Restoration 6. Security 7. Scalability 8. Elastic and instance pools 9. High availability and disaster recovery 10. Monitoring and tuning 11. Database features 12. App modernization Index

Disaster recovery

Disaster recovery (DR) refers to having business continuity during and after events that impact an Azure region, such as a natural disaster or hacking incident that terminates an entire Azure region.

DR for Azure SQL Database can be implemented through active geo-replication. An auto-failover group can be configured for Azure SQL Database and SQL Managed Instance as a business continuity solution. A failover group is designed to ease out the deployment and management of geo-replication databases at scale.

Active geo-replication

Active geo-replication uses Always On technology to asynchronously replicate data to a maximum of four readable secondaries in the same or any other Azure region. Active geo-replication is available across all performance tiers except Hyperscale. A typical active geo-replication environment is shown in Figure 9.17:

A typical active geo-replication environment

Figure 9.17: A typical active geo-replication environment

The DB 1 database is primarily...

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