Which Azure Storage redundancy option synchronously replicates data across multiple facilities within the same region to provide high availability?
Zone-redundant storage (ZRS)
Geo-redundant storage (GRS)
Locally-redundant storage (LRS)
Read-access geo-redundant storage (RA-GRS)
Zone-redundant storage (ZRS) synchronously replicates data across three separate facilities (often referred to as zones) within one region. This setup offers high availability and protects against failures at a single facility. Locally-redundant storage (LRS) replicates data within a single facility, which doesn't safeguard against facility-level failures. Geo-redundant storage (GRS) and Read-access geo-redundant storage (RA-GRS) replicate data to a secondary region asynchronously, providing protection against regional outages but not offering synchronous replication within the same region.
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