AZ-305 - Design Business Continuity Solutions (13% of the exam) - Section 3.1

Design solutions for backup and disaster recovery using Azure Backup and Azure Site Recovery.

Design a backup strategy using Azure Backup, Recovery Services vaults, and backup policies that satisfies defined RPO targets for virtual machines, databases, and file workloads. Use Azure Site Recovery to replicate on-premises and Azure workloads so that RTO targets can be met after a regional failure.

Azure BackupRecovery Services vaultbackup policiesAzure Site RecoveryRTO and RPO targets

Practice question for this objective

Free sampleDesign Business Continuity Solutionsmedium

Your AZ-305 design must protect Azure VMs, on-premises file servers via the MARS agent, and Azure Blob containers, with a single RPO target of 24 hours and an RTO of 4 hours. A WAF Reliability pillar review asks which vault choice aligns with the workloads documented for each service.

APut Azure VM and MARS-agent workloads in a Recovery Services vault and Azure Blob operational backup in a Backup vault. Correct
BPut every workload into a single Backup vault to consolidate RBAC and monitoring across the design.
CPut every workload into a single Recovery Services vault so MARS, Azure VM, and Blob share one redundancy setting.
DSplit MARS-agent backups into a Backup vault and keep Azure VM and Blob backups in a Recovery Services vault.

MARS and Azure VM extension backups go in Recovery Services vault; Azure Blob backup lives in Backup vault. Azure Backup documents two vault families: Recovery Services vault hosts Azure VM extension backups and MARS-agent backups; Backup vault hosts newer datasource types such as Azure Blob operational/vaulted backup. Aligning each workload to the supported vault keeps the RPO 24h / RTO 4h targets achievable using Microsoft-supported flows.

Why A is correct: Correct. Azure Backup documents two vault families: Recovery Services vault hosts Azure VM extension backups and MARS-agent backups; Backup vault hosts newer datasource types such as Azure Blob operational/vaulted backup.

Why B is wrong: Backup vault does not cover MARS-agent file/folder/system-state backup or the classic Azure VM backup extension flow; those workloads are bound to Recovery Services vault.

Why C is wrong: Azure Blob operational and vaulted backup are protected through Backup vault, not Recovery Services vault, so a single-RSV design omits the blob workload.

Why D is wrong: Backup vault does not host MARS-agent backups, and Azure Blob backup is configured through Backup vault, so the split is inverted.

See more AZ-305 practice questions, answers explained.

Exam traps in Design Business Continuity Solutions

Answers that look right on this material and are not. Each one is a distractor from a different question in the AZ-305 bank for this domain.

Configure active geo-replication; RTO is typically less than 30 seconds and RPO is 0.
Why it is wrong: Active geo-replication targets cross-region DR with RTO typically under 60 seconds and an RPO of 0 or greater, not an in-region 30-second guarantee.
Create all 600 Recovery Services vaults inside one subscription; the per-subscription cap is documented as 1,000 vaults.
Why it is wrong: The documented limit is 500 vaults per subscription, not 1,000, so 600 cannot fit in a single subscription.
RTO typically less than 60 seconds; RPO equal to or greater than 0 depending on cross-region replication lag.
Why it is wrong: Less than 60-second RTO is the failover-group target, not geo-restore; geo-restore is documented as minutes to hours.

Examworthy is not affiliated with or endorsed by Microsoft. Original, blueprint-aligned practice material only.