Exam AZ-305 topic 3 question 27 discussion

Why GRS and not ZRS?

Before GRS to be able to initiate failover Then initiate failover To mee the requirement of being able to go fail back to the previous region we need to enable GRS. For the last point see justification below with the reference to MS docs: "After the failover, your storage account type is automatically converted to locally redundant storage (LRS) in the new primary region. You can re-enable geo-redundant storage (GRS) or read-access geo-redundant storage (RA-GRS) for the account." https://learn.microsoft.com/en-us/azure/storage/common/storage-initiate-account-failover?tabs=azure-portal#important-implications-of-unplanned-failover

CORRECT

Why to configure again the GRS after the fail over?

1. Before a failover, configure geo-redundant storage (GRS) replication for the storage account 2. Initiate a failover 3. After a failover, configure geo-redundant storage (GRS) replication for the storage account

Answer is correct: Prerequisites: Before you can perform an account failover on your storage account, make sure that:Your storage account is configured for geo-replication (GRS, GZRS, RA-GRS or RA-GZRS). For more information about Azure Storage redundancy, https://learn.microsoft.com/en-us/azure/storage/common/storage-initiate-account-failover?tabs=azure-portal

Given answer is correct https://learn.microsoft.com/en-us/azure/storage/common/storage-initiate-account-failover?tabs=azure-portal Verify Point 3 in the link Verify that your storage account is configured for geo-redundant storage (GRS) or read-access geo-redundant storage (RA-GRS). If it's not, then select Configuration under Settings to update your account to be geo-redundant. 5th Point Select Prepare for failover. After the failover, your storage account type is automatically converted to locally redundant storage (LRS) in the new primary region. You can re-enable geo-redundant storage (GRS) or read-access geo-redundant storage (RA-GRS) for the account.