ExpertMedium1 markMultiple Choice
AZ-900 · Question 32 · Domain 2.4: Azure Storage Services
What is the primary difference between Locally Redundant Storage (LRS) and Geo-Redundant Storage (GRS)?
What is the primary difference between Locally Redundant Storage (LRS) and Geo-Redundant Storage (GRS)?
Answer options:
A.
LRS replicates data within a single data center, while GRS replicates data to a secondary region.
B.
LRS is used for Blob storage, while GRS is used for Disk storage.
C.
LRS provides read access to the secondary replica, while GRS does not.
D.
LRS replicates data across three availability zones, while GRS replicates within one zone.
How to approach this question
Compare the physical locations where data is copied for LRS vs GRS.
Full Answer
A.LRS replicates data within a single data center, while GRS replicates data to a secondary region.✓ Correct
LRS replicates data within a single data center, while GRS replicates data to a secondary region.
Locally Redundant Storage (LRS) copies your data synchronously three times within a single physical location in the primary region. Geo-Redundant Storage (GRS) copies your data synchronously three times within a single physical location in the primary region using LRS, and then copies your data asynchronously to a single physical location in a secondary region.
Common mistakes
Confusing LRS with ZRS (Zone-Redundant Storage). ZRS spans multiple data centers in a region; LRS is just one data center.
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