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Which Azure Storage redundancy option provides the HIGHEST durability by replicating data to a paired region on a different geography?
AGeo-redundant storage (GRS) — replicates 6 copies, 3 in the primary region and 3 in the paired region
BZone-redundant storage (ZRS) — 3 copies across zones inside a single region
CLocally redundant storage (LRS) — 3 copies inside a single datacenter
DPremium SSD storage — single-region SSD-backed disks
Answer & Solution
Correct answer: A. Geo-redundant storage (GRS) — replicates 6 copies, 3 in the primary region and 3 in the paired region
GRS keeps 3 copies in the primary region plus 3 in a paired region, surviving even a regional disaster. LRS protects only against single-datacenter failure; ZRS protects against single-zone failure; Premium SSD is a performance tier, not a durability strategy.
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