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Zorluk: ZorDesign Azure Backup Solutions

You are designing a backup solution for a fleet of Azure Virtual Machines running a business-critical enterprise resource planning (ERP) application.

The design must satisfy the following requirements:
- Restore operations for backups younger than 7 days must achieve the lowest possible Recovery Time Objective (RTO) by recovering directly from local snapshots (Instant Restore).
- Recovery points must be retained in a Recovery Services vault for 365 days to meet regulatory compliance.
- The solution must allow restoration to a paired secondary region at any time, even if the primary region is fully functional and online.

Which backup configuration should you recommend?

  1. Configure a Recovery Services vault with Geo-redundant storage (GRS) and Cross Region Restore enabled. Define an Enhanced backup policy with an instant restore retention of 7 days and a vault retention of 365 days.Cevap
  2. B
    Configure a Recovery Services vault with Geo-redundant storage (GRS) and Cross Region Restore enabled. Define a Standard backup policy with an instant restore retention of 7 days and a vault retention of 365 days.
  3. C
    Configure a Recovery Services vault with Locally-redundant storage (LRS). Define an Enhanced backup policy with an instant restore retention of 7 days and a vault retention of 365 days.
  4. D
    Configure a Recovery Services vault with Geo-redundant storage (GRS) and Cross Region Restore enabled. Define a Standard backup policy with an instant restore retention of 5 days, relying on vault-tier recovery points to satisfy the low RTO requirement for recoveries between 5 and 7 days.

Cevap

Configure a Recovery Services vault with Geo-redundant storage (GRS) and Cross Region Restore enabled, and define an Enhanced backup policy with an instant restore retention of 7 days and a vault retention of 365 days.
The correct configuration uses Geo-redundant storage (GRS) combined with Cross Region Restore (CRR) to satisfy the requirement of restoring to a paired secondary region at any time. Furthermore, because the low-RTO operational recovery requirement spans 7 days, an Enhanced backup policy must be used since the Standard backup policy type enforces a maximum limit of 5 days for local instant restore snapshots.

Adım Adım Çözüm

1
Analyze the regional resilience and availability requirements.
Since backups must be restorable to a paired secondary region at any time even when the primary region is fully functional, Geo-redundant storage (GRS) with Cross Region Restore (CRR) must be enabled on the Recovery Services vault.
Standard GRS only allows restoration in the secondary region after Azure declares a disaster and initiates a failover. Enabling CRR allows the customer to perform restores in the secondary region at any time.
2
Determine the backup policy type needed to meet the Recovery Time Objective (RTO) requirement.
An Enhanced backup policy is required because the instant restore retention must be set to 7 days.
The Standard backup policy only supports instant restore (snapshot) retention between 1 and 5 days. The Enhanced backup policy supports snapshot retention up to 30 days, allowing the 7-day low RTO requirement to be met.
3
Evaluate long-term retention requirements.
Set the vault retention to 365 days in the Enhanced backup policy.
This satisfies the regulatory compliance requirement to retain recovery points for one year.

Anahtar Kavram

Azure VM Backup Policy Types and Vault Storage Redundancy Options
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Konular

Design Azure Backup Solutions

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