Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
You manage several Windows and Linux Azure virtual machines that run on Premium SSD v2 managed disks across two availability zones in the East US region. Your compliance team requires the following:
Create daily application-consistent backups with a recovery point objective (RPO) of 24 hours and a backup window of no more than 15 minutes.
Retain each backup for 30 days.
Minimize backup storage costs by storing only incremental changes.
Be able to restore any virtual machine to the secondary paired region (East US2) if the primary region becomes unavailable.
Which Azure-native solution should you recommend to meet all the requirements with the least operational effort?
Configure Azure Backup VM backups in a Recovery Services vault that uses Geo-redundant storage and enable Cross-Region Restore.
Schedule daily Managed Disk snapshots stored in a ZRS snapshot vault and copy them manually to East US2.
Run custom scripts that back up each VM to Azure Blob Storage using VMExport and replicate the storage account to the paired region.
Deploy Azure Site Recovery to replicate each VM to East US2 with a 24-hour retention policy.
Azure Backup's VM backup leverages incremental snapshots that are taken within minutes, satisfy the 24-hour RPO, and use a recovery point snapshot chain so each backup after the first is incremental, reducing storage costs. When the Recovery Services vault is configured with Geo-redundant storage (GRS) and Cross-Region Restore (CRR) is enabled, the service keeps replica data in the paired region and allows restores directly in East US2 if East US is unavailable, meeting the cross-region recovery requirement without additional replication setup. Azure Backup supports both Windows and Linux VMs on Premium SSD v2 managed disks and provides simplified policy-based retention, so a 30-day daily retention rule is straightforward. Azure Site Recovery focuses on continuous replication for near-zero RPO scenarios rather than daily backups, whereas custom scripts with Azure Blob storage or disk-level snapshots would require significant operational maintenance and would not provide automatic application-consistent backups or cross-region restore capability. Therefore, configuring Azure Backup with a Recovery Services vault that uses GRS and enables Cross-Region Restore is the optimal choice.
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Microsoft Azure Solutions Architect Expert AZ-305
Design business continuity solutions
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