Microsoft Azure Architect Technologies (AZ-300) Practice Exam

What is the consequence of a data corruption scenario in disaster recovery?

1. Only backup data will be useful for recovery.

2. All replicas become useless.

3. Replication will be sufficient for recovery.

4. Data can be automatically repaired.

The correct answer is: All replicas become useless.

In a data corruption scenario during disaster recovery, the most significant consequence is that all replicas become useless. This is because data corruption can propagate through replication processes, where corrupted data is sent to replicas, thus invalidating them. If the primary data source is corrupted and that corrupted data is replicated to other locations, those replicas will not be reliable for recovery, as they will have the same data corruption. In disaster recovery plans, having clean, uncorrupted backups is crucial. If the only available instances of the data are corrupted, the organization may face severe challenges in restoring operations to a normal state. Recognizing that all replicas are compromised in this scenario underscores the importance of robust backup strategies that can be relied upon when corruption occurs, instead of solely relying on replicas for recovery. Other options suggest alternative consequences, such as the utility of backups or the ability to repair data automatically, which may not be true in all cases of data corruption. Recovery strategies must account for the possibility of corruption affecting all instances of the data, highlighting the need for comprehensive disaster recovery planning that includes reliable backup sources.