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Difficulty: HardDesign Azure Backup Solutions

You are designing a backup solution for an Azure Virtual Machine hosting a critical line-of-business (LOB) application. The virtual machine is configured with Premium SSD v2 managed disks.

The backup solution must satisfy the following requirements:
- Recoveries from any backup created within the last 4545 days must achieve a recovery time objective (RTO) of under 55 minutes by restoring directly from local snapshots.
- Backup data must be replicated to a secondary region to protect against regional outages.
- Daily backups must be retained for 9090 days, and monthly backups must be retained for 11 year.
- The solution must minimize cost while meeting the technical capabilities of the storage and backup services.

Which backup configuration should you recommend to meet these requirements?

  1. A
    An Enhanced backup policy in a Recovery Services vault configured with Geo-Redundant Storage (GRS), with the instant restore snapshot retention set to 4545 days, and the remaining daily and monthly recovery points retained in the Vault-standard tier.
  2. An Enhanced backup policy in a Recovery Services vault configured with Geo-Redundant Storage (GRS), with the instant restore snapshot retention set to 3030 days, and the remaining daily and monthly recovery points retained in the Vault-standard tier.Answer
  3. C
    A Standard backup policy in a Recovery Services vault configured with Geo-Redundant Storage (GRS), with the instant restore snapshot retention set to 55 days, and the remaining daily and monthly recovery points retained in the Vault-standard tier.
  4. D
    An Enhanced backup policy in a Backup vault configured with Geo-Redundant Storage (GRS), with the instant restore snapshot retention set to 3030 days, and all remaining recovery points moved immediately to the Vault-archive tier.

Answer

An Enhanced backup policy in a Recovery Services vault configured with Geo-Redundant Storage (GRS), with the instant restore snapshot retention set to 3030 days, and the remaining daily and monthly recovery points retained in the Vault-standard tier.
The correct configuration uses an Enhanced backup policy in a Recovery Services vault with geo-redundant storage (GRS) and sets the instant restore snapshot retention to the maximum supported limit of 3030 days. Standard backup policies do not support Premium SSD v2 managed disks. While the requirement specifies instant recovery for up to 4545 days, the platform limit for instant restore snapshot retention in an Enhanced policy is 3030 days. Setting the retention to 3030 days satisfies the requirement to the maximum extent possible, with older recovery points stored in the Vault-standard tier.

Step-by-Step Solution

1
Identify the disk types and select the appropriate backup policy type.
Since the VM uses Premium SSD v2 managed disks, an Enhanced backup policy must be used. Standard backup policies do not support Premium SSD v2, Ultra Disk, or Shared Disks.
Azure Backup requires the Enhanced policy to protect VMs using advanced disk types.
2
Evaluate the instant restore (snapshot-tier) retention limitations.
The requirement asks for 4545 days of instant recovery from local snapshots. However, the maximum supported instant restore retention for an Enhanced policy is 3030 days. Therefore, the policy must be configured with a 3030-day instant restore retention, which is the maximum possible.
Configuring a value higher than 3030 days in the policy will result in a configuration error.
3
Select the correct vault type and redundancy settings.
The backups must be stored in a Recovery Services vault configured with Geo-Redundant Storage (GRS).
Recovery Services vaults are used for Azure VM backups, and GRS satisfies the requirement for regional resilience.

Key Concept

Azure VM Enhanced backup policy disk support and instant restore limits
Estimated Time:2m 30s
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Topics

Design Azure Backup Solutions

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