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Zorluk: OrtaData Redundancy and High Availability

A logistics company is designing the data redundancy strategy for two different storage workloads in Azure:

1. Workload A (Configuration Files): Requires protection against zone failures within the primary region, and must also be replicated to a secondary region to protect against regional disasters. Read-only access to the secondary region is not required.
2. Workload B (User Profile Images): Must survive a regional outage, and the application must be able to retrieve these images from the secondary region at all times (including during a primary region outage) without waiting for a customer-initiated or Microsoft-initiated failover. Zone redundancy is not required in the primary region.

Which two redundancy options should you select to meet the requirements of each workload? (Select two.)

  1. Geo-zone-redundant storage (GZRS) for Workload ACevap
  2. Read-access geo-redundant storage (RA-GRS) for Workload BCevap
  3. C
    Locally redundant storage (LRS) for Workload A
  4. D
    Read-access geo-redundant storage (RA-GRS) for Workload A, configured for active-active write capability on the secondary endpoint

Cevap

Geo-zone-redundant storage (GZRS) for Workload A and Read-access geo-redundant storage (RA-GRS) for Workload B
Geo-zone-redundant storage (GZRS) for Workload A is correct because it synchronously replicates data across three availability zones in the primary region and asynchronously replicates it to the secondary region. Read-access geo-redundant storage (RA-GRS) for Workload B is correct because it provides read-only access to the secondary region without a failover, while avoiding the cost of zone redundancy in the primary region.

Adım Adım Çözüm

1
Analyze the requirements for Workload A.
Workload A requires zone redundancy in the primary region (ZRS) and replication to a secondary region (GRS). Combining these requires Geo-zone-redundant storage (GZRS).
GZRS replicates data across three zones in the primary region and then copies it to a secondary region.
2
Analyze the requirements for Workload B.
Workload B requires survival of regional outages and immediate read-only access to the secondary region without initiating failover. It does not require zone redundancy in the primary region.
Read-access geo-redundant storage (RA-GRS) replicates data to a secondary region and exposes a read-only endpoint, satisfying the requirement without the higher cost of zone redundancy.

Anahtar Kavram

Selecting the appropriate Azure Storage redundancy tier (GZRS and RA-GRS) based on high availability, zone resilience, regional recovery, and secondary read requirements.
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Konular

Data Redundancy and High Availability

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