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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
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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

Geo-restoring databases

A geo-restore allows you to restore a database from a geo-redundant backup to any available Azure SQL servers and SQL Managed Instance, irrespective of the region.

The automatic backups of Azure SQL Database and SQL Managed Instance are geo-redundant by default, and are copied to a paired Azure region as and when they are taken. There is a maximum delay of one hour when copying a database to a paired geographical location. Therefore, in the case of a disaster, there can be up to an hour of data loss:

Geo-replication to a different geographical location

Figure 5.26: Geo-replication to a different geographical location

Geo-restore can be used to recover a database if an entire region is unavailable because of a disaster:

Using geo-restore in the case of the unavailability of an entire region

Figure 5.27: Use of geo-restore in the case of unavailability of an entire region

The most recent full and differential backups are used to perform a geo-restore.

Geo-restore doesn't support PITR. It is the most basic disaster...

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