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Difficulty: MediumDesign Azure Backup Solutions

An organization is deploying an SAP HANA database on an Azure Virtual Machine utilizing Premium SSD v2 managed disks. You are designing an Azure Backup solution to meet the following requirements:
- Provide multiple backups per day to achieve a 4-hour Recovery Point Objective (RPO).
- Retain local snapshots for 12 days to support rapid, instant restore from disk snapshots to minimize Recovery Time Objective (RTO).
- Retain weekly backups for 365 days, ensuring they can be restored within 3 hours under standard recovery processes.
- Ensure backups are resilient against a primary region outage.

Which backup configuration should you recommend?

  1. A
    Configure a Recovery Services vault with Locally Redundant Storage (LRS). Implement an Enhanced backup policy with snapshot retention set to 12 days and vault-standard retention set to 365 days.
  2. B
    Configure a Recovery Services vault with Geo-redundant storage (GRS). Implement a Standard backup policy with snapshot retention set to 12 days and vault-standard retention set to 365 days.
  3. Configure a Recovery Services vault with Geo-redundant storage (GRS). Implement an Enhanced backup policy with snapshot retention set to 12 days and vault-standard retention set to 365 days.Answer
  4. D
    Configure a Recovery Services vault with Geo-redundant storage (GRS). Implement an Enhanced backup policy with snapshot retention set to 12 days, and configure a tiering policy to move the vault backups to the vault-archive tier after 14 days.

Answer

Configure a Recovery Services vault with Geo-redundant storage (GRS). Implement an Enhanced backup policy with snapshot retention set to 12 days and vault-standard retention set to 365 days.
The correct configuration uses a Recovery Services vault configured with Geo-redundant storage (GRS) and an Enhanced backup policy. The Enhanced backup policy is required because the database uses Premium SSD v2 managed disks, requires multiple daily backups (4-hour RPO), and needs to retain local snapshots for 12 days (Standard policies only support 1-5 days of instant restore). Retaining the vault backups in the standard tier guarantees that restore operations avoid the multi-hour rehydration latency associated with the vault-archive tier.

Step-by-Step Solution

1
Analyze workload and schedule compatibility.
The database uses Premium SSD v2 managed disks and requires multiple backups per day to meet a 4-hour RPO. Standard backup policies do not support Premium SSD v2 or multiple daily backups, meaning an Enhanced backup policy is required.
Enhanced backup policies are necessary for modern virtual machine features and frequent backup schedules.
2
Evaluate the instant restore snapshot retention requirement.
The RTO requirements specify keeping local snapshots for 12 days. Standard backup policies restrict instant restore retention to a maximum of 5 days, whereas Enhanced backup policies allow up to 30 days.
Verifies that the Enhanced policy configuration is required to support the 12-day local snapshot retention.
3
Determine storage redundancy and recovery latency constraints.
Geo-redundant storage (GRS) is required to ensure resilience against a primary region outage. To meet the 3-hour recovery SLA, the vault backups must remain in the vault-standard tier because moving them to the vault-archive tier introduces up to 15 hours of standard rehydration latency.
Selects the correct vault tier and redundancy type based on disaster recovery and RTO parameters.

Key Concept

Designing Azure Backup solutions using Enhanced backup policies to support Premium SSD v2, multiple daily backups, extended instant restore snapshot retention, and low-latency vault restore configurations.
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Topics

Design Azure Backup Solutions

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