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Difficulty: MediumDesign Azure Backup Solutions

An organization hosts its production workloads on Azure Virtual Machines. You are designing an Azure Backup solution that must meet the following requirements:
- Technical recoveries of backups from the last 55 days must achieve the lowest possible Recovery Time Objective (RTO) by restoring directly from local disk snapshots.
- Monthly backups must be retained for 33 years (3636 months) to satisfy regulatory auditing compliance.
- The backup data must remain accessible even in the event of an entire Azure region outage.

You deploy a Recovery Services vault configured with Geo-Redundant Storage (GRS). Which configuration should you recommend in the backup policy?

  1. A backup policy with an instant restore snapshot retention of 55 days, and a long-term retention configuration that keeps monthly recovery points in the vault for 3636 months.Answer
  2. B
    A backup policy with an instant restore snapshot retention of 3636 months to ensure all monthly recovery points can be restored instantly from local disk snapshots.
  3. C
    A backup policy with an instant restore snapshot retention of 55 days, a long-term vault retention of 3636 months, and changing the Recovery Services vault redundancy to Locally Redundant Storage (LRS).
  4. D
    A backup policy that disables instant restore snapshots (retaining them for 00 days) and moves all recovery points to the vault-archive tier immediately to minimize storage costs.

Answer

A backup policy with an instant restore snapshot retention of 55 days, and a long-term retention configuration that keeps monthly recovery points in the vault for 3636 months.
The correct configuration uses an instant restore retention of 55 days to meet the low RTO requirement by restoring directly from local disk snapshots, while keeping the monthly recovery points in the vault for 3636 months to satisfy regulatory compliance. It utilizes GRS to ensure regional resilience.

Step-by-Step Solution

1
Analyze RTO requirements for recent backups.
The requirement states recoveries of backups from the last 55 days must restore directly from local disk snapshots. This is achieved by setting the operational tier (instant restore) retention to 55 days.
Azure Backup's instant restore feature retains snapshots on the VM's disks for 11 to 55 days under a standard policy, allowing direct restorations without copying data from the vault.
2
Analyze long-term compliance retention requirements.
The monthly backups must be kept for 3636 months. This long-term retention should be stored in the vault tier, not as local disk snapshots, to control costs.
Keeping snapshots on managed disks for 3636 months is not supported by Azure Backup policy limits, and storing them on standard/premium SSDs would incur extreme storage costs.
3
Determine the vault resilience configuration.
Confirm that the Recovery Services vault is configured with Geo-Redundant Storage (GRS) as deployed.
GRS replicates backup data to a secondary paired region, ensuring that the backups remain accessible even if the primary region experiences a complete outage.

Key Concept

Azure Backup operational tier (instant restore) vs. vault tier configuration
Estimated Time:2m 0s
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Topics

Design Azure Backup Solutions

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