Question 470
An administrator needs scheduled Azure Disk Backup of one stand-alone Azure managed disk, not ordinary whole-VM backup. Which type of Azure Backup vault should hold the protection policy and backup instance for that disk?
Explanation
Correct Answer
Azure Disk Backup protects an individual Azure managed disk using a Backup vault and a disk-specific policy. It creates incremental disk snapshots in a designated snapshot resource group; those operational-tier snapshots are not stored in Backup vault storage even though the Backup vault holds the policy and backup instance. This differs from conventional full Azure VM backup, which uses a supported Recovery Services vault. In this question the object to protect is an individual managed disk, so choose a Backup vault at a supported region and grant its managed identity appropriate disk and snapshot resource-group permissions. Do not assume that all workloads accept either vault type.
Incorrect Answers
The nearby action 'Use an eligible Recovery Services vault for Azure VM backup' is associated with this separate need: an organization must back up ordinary Azure virtual machines with scheduled recovery points. That is because VM backup workloads have a supported Recovery Services vault policy model. Here an administrator needs a current Azure Backup workload that explicitly uses Backup vault, not classic Azure VM protection, so 'Use an eligible Recovery Services vault for Azure VM backup' misses the fact that vault selection must match workload support and policy capability, not name similarity. 'Use a Backup vault for a data source supported by that vault type' is the more defensible action; confirm its behavior in the target service before calling the task complete.
'Check matching source/vault region requirements and supported backup policy' solves another task because regional compatibility can limit protection; policy creation doesn't guarantee a workload can be enrolled. For the situation where an administrator needs a current Azure Backup workload that explicitly uses Backup vault, not classic Azure VM protection, this distractor misses the requirement that vault selection must match workload support and policy capability, not name similarity. Unlike 'Check matching source/vault region requirements and supported backup policy', 'Use a Backup vault for a data source supported by that vault type' directly targets that requirement; its success must be confirmed at the authorized resource scope.
When a disaster-recovery administrator creates a vault far from the protected workloads without checking requirements, the action 'Choose a supported vault region aligned to the protected source workload and recovery design' can be relevant: backup/restore support often has regional association and workload residency constraints. For the different problem of an administrator needs a current Azure Backup workload that explicitly uses Backup vault, not classic Azure VM protection, 'Choose a supported vault region aligned to the protected source workload and recovery design' misses the mechanism that vault selection must match workload support and policy capability, not name similarity. Choosing 'Choose a supported vault region aligned to the protected source workload and recovery design' would address that other need, whereas 'Use a Backup vault for a data source supported by that vault type' is intended to solve the stated condition.






Microsoft Azure Administrator (AZ-104) Practice Tests