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Zorluk: KolayData Redundancy and High Availability

You are designing an Azure Storage solution for storing virtual machine backups. The compliance requirements state that the backup data must remain available even in the event of a catastrophic disaster that causes an entire Azure region to become offline. Which storage redundancy option should you recommend to meet the requirements while minimizing costs?

  1. Geo-redundant storage (GRS)Cevap
  2. B
    Locally redundant storage (LRS)
  3. C
    Zone-redundant storage (ZRS)
  4. D
    Read-access geo-redundant storage (RA-GRS) configured to allow active-active write operations in both the primary and secondary regions

Cevap

Geo-redundant storage (GRS)
Geo-redundant storage (GRS) replicates data asynchronously to a secondary region, ensuring data is preserved even if the primary region goes offline. It is the most cost-effective option for cross-region replication.

Adım Adım Çözüm

1
Identify the primary disaster recovery requirement.
The system must survive a complete regional outage.
This rules out Locally Redundant Storage (LRS) and Zone-Redundant Storage (ZRS), which only replicate data within a single region.
2
Determine the lowest-cost option that replicates data to a secondary region.
Geo-redundant storage (GRS) meets the requirement by replicating data asynchronously to a secondary paired region.
GRS is more cost-effective than Geo-zone-redundant storage (GZRS) and meets the requirement without needing active read access on the secondary region.

Anahtar Kavram

Selecting the appropriate Azure Storage redundancy tier based on regional availability requirements and cost constraints.
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Konular

Data Redundancy and High Availability

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