Microsoft Certified: Azure Solutions Architect ExpertDesign business continuity solutionsEasy
An enterprise organization uses Azure Files to store critical shared documents. The files need to be highly available and resilient to zonal outages within a single Azure region. The storage solution must also offer synchronous replication. Which Azure Files redundancy option should be selected?
- AGeo-zone-redundant storage (GZRS)
- BZone-redundant storage (ZRS)
- CLocally-redundant storage (LRS)
- DGeo-redundant storage (GRS)
Show answer & explanationAnswer & explanation
Correct answer: B. Zone-redundant storage (ZRS)
Zone-redundant storage (ZRS) for Azure Files synchronously replicates data across three Azure Availability Zones in the primary region, providing resilience against zonal outages and ensuring high availability within that region.
Why the other options are wrong
- A. GZRS replicates asynchronously to a secondary region and is not strictly synchronous across regions, though it uses ZRS in the primary. The primary focus here is synchronous replication within a region for zonal resilience.
- C. LRS provides redundancy within a single data center, not protecting against zonal outages.
- D. GRS replicates data asynchronously to a secondary region, which doesn't address the 'within a single Azure region' and 'synchronous replication' for zonal outages.
Azure Files Zone-redundant storage (ZRS)
A storage redundancy option for Azure Files that synchronously replicates data across three Azure Availability Zones in the primary region.
- Protects against zonal outages within a region.
- Provides synchronous replication for high data consistency.
- Offers 99.999999999% (11 nines) annual durability.
Memory trick: Files in Zones: ZRS keeps your documents safe regionally.