Azure Storage Redundancy Options

Question 1

Locally Redundant Storage (LRS)

Answer 1

LRS stores three copies of the data within a single data center. It is the cheapest option but may not be available in case of a regional outage.

Example sentence: LRS is suitable for non-critical data storage.

Question 2

Zone-Redundant Storage (ZRS)

Answer 2

ZRS replicates data across three Azure availability zones in the primary region, providing higher protection than LRS.

Example sentence: ZRS is recommended for critical data with single-region redundancy.

Question 3

Geo-Redundant Storage (GRS)

Answer 3

GRS copies data synchronously within the primary region and asynchronously to a secondary region, offering high data protection but at a higher cost.

Example sentence: GRS is suitable for disaster recovery scenarios.

Question 4

Geo-Zone-Redundant Storage (GZRS)

Answer 4

GZRS replicates data to three availability zones in the primary region and a single data center in the secondary region, providing maximum durability and consistency but at a premium price.

Example sentence: GZRS is ideal for applications requiring maximum data protection.