Examkin

Question

Difficulty: MediumDesign Storage and Non-Relational Data HA and DR

ThermaLogistics operates a fleet of refrigerated shipping containers and uses Azure Blob Storage to ingest real-time temperature and telemetry data. You are designing a high availability (HA) and disaster recovery (DR) solution for this data. The solution must satisfy the following requirements:
- Maximize read availability for telemetry reporting, allowing read access to data even if the primary region experiences an outage.
- Achieve a recovery point objective (RPO) of less than 15 minutes for regional disasters.
- Minimize costs while ensuring regional redundancy.
- Ensure that the telemetry ingestion application only writes to the primary endpoint, as the secondary region does not support writes prior to a failover.

Which two actions should you perform? (Select two.)

  1. Configure the storage account to use Read-Access Geo-Redundant Storage (RA-GRS).Answer
  2. Configure the telemetry reporting application to query the secondary storage endpoint during a primary region outage.Answer
  3. C
    Configure the telemetry ingestion application to write to both the primary and secondary storage endpoints simultaneously.
  4. D
    Configure the storage account to use Read-Access Geo-Zone-Redundant Storage (RA-GZRS) to minimize storage costs.
  5. E
    Configure the storage account to use Locally Redundant Storage (LRS) to minimize storage costs.

Answer

Configure the storage account to use Read-Access Geo-Redundant Storage (RA-GRS), and configure the telemetry reporting application to query the secondary storage endpoint during a primary region outage.
To meet the requirements, the storage account must be configured with Read-Access Geo-Redundant Storage (RA-GRS). RA-GRS replicates the data asynchronously to a secondary paired region with an RPO of under 15 minutes. It provides a read-only endpoint (suffix -secondary) that the telemetry reporting application can query to read data during a primary region outage, ensuring read HA. Since GRS is less expensive than GZRS, it satisfies the cost-minimization constraint while meeting the DR and read availability targets.

Step-by-Step Solution

1
Select a storage replication strategy that provides read access to the secondary region during primary region outages while minimizing costs.
Read-Access Geo-Redundant Storage (RA-GRS) is chosen because it replicates data to a secondary region, allows read access via the secondary endpoint, and is less expensive than RA-GZRS.
Meets the requirements for read availability, cost minimization, and regional disaster recovery.
2
Direct the reporting application to access the secondary endpoint during an outage.
The reporting application is configured to read from the storage account's secondary endpoint.
Ensures that the dashboard remains operational for reads even when the primary region is unavailable.

Key Concept

Azure Storage replication options and read-access endpoints for geo-redundant storage.
Rate this question

Topics

Design Storage and Non-Relational Data HA and DR

More questions from this topic