Question

Difficulty: MediumDesign Azure Backup Solutions

A company is planning the backup strategy for a group of Azure Virtual Machines that run a payroll processing application. The virtual machines use Premium SSD v2 managed disks. The backup design must meet the following requirements:
- Achieve a Recovery Point Objective (RPO) of 8 hours.
- Retain backup snapshots in the local storage tier for 5 days to allow immediate recovery.
- Ensure backup data remains available if an entire availability zone in the primary region fails, without replicating data to a secondary region.

Which two configuration settings should you include in the backup design?

  1. A Recovery Services vault configured with zone-redundant storage (ZRS)Answer
  2. An Enhanced backup policy with a schedule of every 8 hours and snapshot retention of 5 daysAnswer
  3. C
    A Recovery Services vault configured with locally redundant storage (LRS)
  4. D
    A Standard backup policy with vault-tier retention set to 5 days

Answer

To meet the requirements, you must use a Recovery Services vault configured with zone-redundant storage (ZRS) and an Enhanced backup policy configured with an 8-hour schedule and 5 days of snapshot retention.
The correct solution includes configuring a Recovery Services vault with zone-redundant storage (ZRS) to protect against availability zone failures without replicating to a secondary region, and implementing an Enhanced backup policy to support Premium SSD v2, enable an 8-hour backup frequency, and specify 5 days of snapshot retention for instant recovery.

Step-by-Step Solution

1
Select the correct vault type and redundancy
Identify that Azure VMs require a Recovery Services vault. To survive a zone outage within the same region, ZRS is required instead of LRS.
LRS does not survive a zone outage, while ZRS replicates data across three availability zones in the primary region.
2
Determine the backup policy type
Identify that Premium SSD v2 managed disks and sub-daily backups (every 8 hours) require an Enhanced backup policy.
Standard backup policies are limited to one backup per day and do not support Premium SSD v2 or Ultra disks.
3
Configure the snapshot retention for instant restore
Set the snapshot retention in the Enhanced policy to 5 days.
Instant recovery relies on local snapshots rather than vault-tier storage, so snapshot retention must match the instant recovery requirements.

Key Concept

Designing Azure VM Backup policies with Enhanced features and appropriate vault redundancy.
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