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Difficulty: Very hardConfigure Blob Storage Lifecycle and Replication

An administrator is configuring a General Purpose v2 (GPv2) storage account named corpstore01 in the East US region. The storage account currently uses Locally Redundant Storage (LRS) and hosts critical application logs. The administrator must meet the following requirements:

- Replicate the storage account to the West US region to protect against regional outages while allowing read access to the replicated data in West US under normal operations.
- Automatically move block blobs inside the container named telemetry that begin with the prefix daily/ to the Archive storage tier if they have not been modified for more than 90 days.
- Ensure that the storage account is prepared for customer-managed failover, and understand the redundancy state of the account after a failover is executed.

Which of the following configurations and statements are correct for this scenario? (Select TWO.)

  1. Configure the replication of the storage account to Read-Access Geo-Redundant Storage (RA-GRS).Answer
  2. B
    Create a lifecycle management policy rule with a prefix filter set to daily/ to transition the blobs to the Archive tier.
  3. Create a lifecycle management policy rule with a prefix filter set to telemetry/daily/ to transition the blobs to the Archive tier.Answer
  4. D
    Performing a customer-managed failover will result in the storage account in West US automatically having Read-Access Geo-Redundant Storage (RA-GRS) replication.
  5. E
    Configure the replication of the storage account to Geo-Redundant Storage (GRS), as it provides read access to the secondary region by default.

Answer

Configure the replication of the storage account to Read-Access Geo-Redundant Storage (RA-GRS), and create a lifecycle management policy rule with a prefix filter set to telemetry/daily/ to transition the blobs to the Archive tier.
To satisfy the requirements, the storage account must be configured for Read-Access Geo-Redundant Storage (RA-GRS) to allow read access to the secondary region under normal operations. Additionally, lifecycle rules require prefix filters to start with the container name, meaning the correct path is telemetry/daily/.

Step-by-Step Solution

1
Select the appropriate replication tier to meet read-access requirements.
Read-Access Geo-Redundant Storage (RA-GRS) is selected because it replicates data to West US and allows read access to the secondary endpoint under normal operations.
Standard GRS does not allow read access to the secondary endpoint unless a failover is initiated, making RA-GRS the correct choice.
2
Determine the prefix formatting for the lifecycle management policy rule.
The prefix must be formatted as telemetry/daily/.
Azure lifecycle management policies evaluate prefixes starting with the container name. A prefix of daily/ would look for a container named daily instead of targeting the container named telemetry.
3
Evaluate the behavior of customer-managed failover on replication redundancy.
The failover converts the account to Locally Redundant Storage (LRS) in the new primary region.
When a failover occurs, the secondary region becomes the primary region, and the account replication changes to LRS. Redundancy is not automatically preserved as RA-GRS.

Key Concept

Azure Storage account replication options and Blob Lifecycle Management prefix rule filters.
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Topics

Configure Blob Storage Lifecycle and Replication

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