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Difficulty: EasyDesign Azure Backup Solutions

You are designing a backup solution for critical Azure Virtual Machines. The solution must meet the following requirements:
1. Backups must be protected against a regional outage of the primary Azure region.
2. You must be able to perform instant restores of the virtual machines from local snapshots for the last 2 days.
3. You must retain the backup data in the vault for a total of 30 days.

Which configuration should you recommend?

  1. A Recovery Services vault configured with Geo-redundant storage (GRS), with the backup policy set to 2 days of instant restore retention and 30 days of vault retention.Answer
  2. B
    A Recovery Services vault configured with Locally-redundant storage (LRS), with the backup policy set to 2 days of instant restore retention and 30 days of vault retention.
  3. C
    A Recovery Services vault configured with Geo-redundant storage (GRS), with the backup policy set to 30 days of instant restore retention.
  4. D
    A Recovery Services vault configured with Read-Access Geo-Redundant Storage (RA-GRS) to support active-active write replication of the backups to the secondary region.

Answer

A Recovery Services vault configured with Geo-redundant storage (GRS), with the backup policy set to 2 days of instant restore retention and 30 days of vault retention.
The correct configuration uses a Recovery Services vault with Geo-redundant storage (GRS) to provide regional resilience, combined with a backup policy that keeps local instant restore snapshots for 2 days and retains vault recovery points for 30 days.

Step-by-Step Solution

1
Determine the required vault redundancy to protect against a regional outage.
Identify that Geo-redundant storage (GRS) is required, which replicates data to a secondary region, whereas Locally-redundant storage (LRS) is insufficient.
GRS ensures high availability and disaster recovery across regions, meeting the first requirement.
2
Determine the instant restore retention configuration.
Set the instant restore snapshot retention to 2 days.
This satisfies the requirement to perform instant restores from local snapshots for the last 2 days, and conforms to the Azure VM backup policy limit where instant restore retention is capped between 1 and 5 days.
3
Determine the long-term vault retention configuration.
Set the vault retention to 30 days.
This ensures recovery points are kept in the vault for the full 30-day period as required.

Key Concept

Azure VM Backup policy configuration and vault storage redundancy design.
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Topics

Design Azure Backup Solutions

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