ApexVault Pay is designing a disaster recovery strategy for its transaction ledger application. The ledger data is currently stored in a general-purpose v2 storage account configured with Read-Access Geo-Redundant Storage (RA-GRS), where West US 3 is the primary region and East US is the secondary region. The business continuity requirements specify:
- A Recovery Point Objective (RPO) of 15 minutes.
- A Recovery Time Objective (RTO) of 30 minutes.
- Read availability in the secondary region during a primary region outage must be immediate.
- Write availability must be restored in the secondary region within the RTO.
- Solution costs must be minimized by avoiding multi-region active-write configurations.
During a simulated regional outage of West US 3, the operations team needs to maintain business continuity. The application instance in East US must immediately be able to read existing ledger data. Additionally, the team plans to minimize data loss by performing a customer-managed failover to make East US the primary region.
Which of the following describes the write availability of the storage account during this recovery process?
- Write operations are unavailable in the secondary region until the customer-managed failover is completed, at which point the storage account is converted to locally redundant storage (LRS) in the new primary region and write capabilities are enabled.Cevap
- BWrite operations can be sent directly to the secondary region endpoint while the primary region is offline, before initiating the customer-managed failover.
- CWrite operations are automatically replicated bi-directionally, allowing the application to write to both the primary and secondary endpoints simultaneously during the outage.
- DWrite operations resume immediately in East US once the customer-managed failover is completed, while the storage account maintains geo-redundant storage (GRS) replication back to West US 3 automatically.