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Zorluk: Çok zorDesign Azure Backup Solutions

You are designing a backup solution for a fleet of critical Azure Virtual Machines hosting an enterprise resource planning (ERP) application. The solution must meet the following requirements:
- Restore requests for data deleted within the last 1414 days must be completed in under 1010 minutes using local snapshots.
- The backup schedule must achieve a Recovery Point Objective (RPO) of 1212 hours.
- In the event of a complete primary region outage, administrators must be able to immediately initiate restores of the virtual machines in the secondary paired region.
- The storage redundancy configuration must survive a primary region disaster.

Which vault configuration and backup policy design should you recommend to meet these requirements?

  1. A Recovery Services vault with Geo-Redundant Storage (GRS) and Cross Region Restore (CRR) enabled, using an Enhanced backup policy configured for a twice-daily schedule and 1414 days of instant restore retention.Cevap
  2. B
    A Recovery Services vault with Geo-Redundant Storage (GRS) and Cross Region Restore (CRR) enabled, using a Standard backup policy configured for a daily schedule and 1414 days of vault retention, relying on vault-tier restores for the 1414-day recovery window.
  3. C
    A Recovery Services vault with Locally Redundant Storage (LRS) and Cross Region Restore (CRR) enabled, using an Enhanced backup policy configured for a twice-daily schedule and 1414 days of instant restore retention.
  4. D
    A Recovery Services vault with Geo-Redundant Storage (GRS) and Cross Region Restore (CRR) disabled, using an Enhanced backup policy configured for a twice-daily schedule and 1414 days of instant restore retention, relying on direct read-access to the secondary storage account replication endpoint during an outage.

Cevap

The correct configuration is a Recovery Services vault with Geo-Redundant Storage (GRS) and Cross Region Restore (CRR) enabled, using an Enhanced backup policy configured for a twice-daily schedule and 1414 days of instant restore retention.
The correct configuration uses a Recovery Services vault with GRS and CRR enabled, along with an Enhanced backup policy. The Enhanced backup policy is necessary to support multiple backups per day (achieving the 1212-hour RPO) and to extend the instant restore snapshot retention beyond the Standard policy's 55-day limit to the required 1414 days. Enacting GRS with CRR ensures that recovery points are immediately accessible for restore operations in the secondary paired region during a primary region failure.

Adım Adım Çözüm

1
Determine the backup policy type based on the RPO and snapshot retention requirements.
An Enhanced backup policy is required.
The Standard policy only supports daily backups and a maximum of 55 days of snapshot-level (instant restore) retention. The requirements specify a 1212-hour RPO (requiring multiple backups per day) and a 1414-day instant restore window.
2
Determine the vault storage redundancy type based on disaster recovery requirements.
Geo-Redundant Storage (GRS) is required.
Locally Redundant Storage (LRS) does not protect against a regional disaster, as it stores data within a single region.
3
Evaluate the secondary region access requirements.
Cross Region Restore (CRR) must be enabled on the GRS vault.
Standard GRS without CRR only allows restores in the secondary region after Microsoft initiates a failover. CRR allows administrators to immediately perform restores in the secondary region at any time.

Anahtar Kavram

Azure VM Backup Policies (Standard vs. Enhanced) and Vault Redundancy (GRS with CRR)
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Konular

Design Azure Backup Solutions

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