A company stores customer records in a storage account. During a regional outage, the team must still be able to read the data without waiting for a failover. Which TWO redundancy options meet this read-during-outage requirement?
Choose two.
Show answer and explanation
Answer: B and D
Read-access geo-redundant options replicate data to a secondary region and expose a read endpoint for that secondary copy. RA-GRS pairs geo-replication with read access to the secondary, and RA-GZRS adds zone redundancy in the primary region with the same secondary read access. Standard GRS replicates to the secondary but does not allow reads from it until a failover occurs. LRS and ZRS keep data within one region, so they cannot serve reads during a regional outage.
Why the other options are wrong
- A. LRS keeps copies within a single datacenter. A regional outage would take all copies offline, so reads cannot continue without a copy in another region.
- C. ZRS spreads copies across availability zones in one region. It protects against a zone failure, but it does not replicate to another region, so it cannot serve reads during a regional outage.
- E. Standard GRS replicates data to a secondary region, but the secondary is not readable until a failover occurs. This does not meet the read-during-outage requirement.