ExpertMedium1 markMultiple Choice
AZ-900 · Question 31 · 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 is for structured data, while GRS is for unstructured data.
B.
GRS copies your data to a secondary region, while LRS keeps all copies within a single datacenter.
C.
LRS provides read access during an outage, while GRS does not.
D.
GRS is free, while LRS incurs a monthly charge.
How to approach this question
Focus on the prefixes: 'Locally' vs 'Geo'.
Full Answer
B.GRS copies your data to a secondary region, while LRS keeps all copies within a single datacenter.✓ Correct
GRS copies your data to a secondary region, while LRS keeps all copies within a single datacenter.
Locally Redundant Storage (LRS) replicates your data 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 datacenters in one region; LRS is just one datacenter.
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