Which storage redundancy option replicates data to a secondary region hundreds of miles away for regional disaster recovery?
A.Locally redundant storage (LRS)
LRS stays within a single datacenter — no regional protection.
B.Zone-redundant storage (ZRS)
ZRS spans zones within ONE region — regional outage still loses it.
C.Geo-redundant storage (GRS)
GRS replicates to the paired secondary region. Correct.
D.Premium file shares
Premium is a performance tier, not a redundancy option.
Why this answer
LRS = 3 copies within one datacenter (cheapest, protects hardware failure). ZRS = copies across availability zones in a region (protects datacenter loss). GRS = LRS + async replication to a paired secondary region (protects regional loss). GZRS combines both.
Correct answer: C · Last reviewed 2026-02-13
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