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Difficulty: MediumDesign Azure Backup Solutions

You are designing an Azure Backup solution for a critical application hosted on Azure Virtual Machines. The solution must satisfy the following requirements:

* For any data loss events occurring within the last 77 days, virtual machine restoration must be performed with the absolute minimum recovery time objective (RTO).
* Backups must be resilient to regional disasters, with the capability to initiate restores in the secondary paired region at any time, regardless of the primary region's status.
* Monthly backups must be kept for 33 years at the lowest possible storage cost.

Which two configuration options should you include in the backup design? (Select TWO)

  1. Configure the backup policy with an instant restore snapshot retention of 77 days.Answer
  2. Enable Cross-Region Restore (CRR) on a Recovery Services vault configured with Geo-Redundant Storage (GRS).Answer
  3. C
    Retain instant restore snapshots for 22 days and use vault-standard tier restore points for restores required between 33 and 77 days.
  4. D
    Deploy a Recovery Services vault using Locally Redundant Storage (LRS) to reduce cost and configure manual failover to the secondary region.
  5. E
    Enable the Vault-archive tier for the 77-day instant restore snapshots to minimize operational storage cost.

Answer

Configure the backup policy with an instant restore snapshot retention of 77 days, and enable Cross-Region Restore (CRR) on a Recovery Services vault configured with Geo-Redundant Storage (GRS).
To achieve the lowest possible RTO for the last 77 days, the backup policy must keep the snapshots locally in the source resource group by extending the instant restore snapshot retention to 77 days. To allow restoration in the secondary region at any time regardless of the primary region's status, Cross-Region Restore (CRR) must be enabled on a Geo-Redundant Storage (GRS) vault.

Step-by-Step Solution

1
Analyze the recovery time objective (RTO) requirement for the 77-day window.
Identify that local snapshots (Instant Restore) must be retained for 77 days to bypass vault rehydration/transfer latency.
By default, instant restore snapshots are kept for 22 days. Extending this to 77 days ensures that restores within this period do not pull data from the vault, minimizing recovery time.
2
Analyze the regional disaster recovery and replication requirements.
Determine that the vault needs Geo-Redundant Storage (GRS) with Cross-Region Restore (CRR) enabled.
Standard GRS only allows restores in the secondary region after Microsoft declares a disaster. CRR allows the customer to perform restores in the secondary region at any time.
3
Analyze the cost optimization requirement for long-term monthly backups.
Identify that monthly backups can be moved to the Vault-archive tier.
The Vault-archive tier is ideal for long-term retention of monthly and yearly backups, where recovery time is less critical and data must be kept for at least 180180 days.

Key Concept

Designing Azure Backup policies for low RTO (using extended Instant Restore snapshot retention) and configuring vaults for cross-region recoverability (using GRS with Cross-Region Restore).
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Topics

Design Azure Backup Solutions

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