Diagram
A comparison matrix of four Azure Storage redundancy models (LRS, ZRS, GRS, and RA-GRS) evaluated by scope, protection level, read access, and cost. It shows how protection increases from local hardware failures to regional outages as you move from LRS to RA-GRS.
Azure Storage Redundancy Options
Azure Storage provides several built-in redundancy models to protect your data. Locally Redundant Storage (LRS) copies your data three times within a single data center, protecting you from a hardware failure but not from an outage of the entire data center. Zone-Redundant Storage (ZRS) replicates data across multiple data centers, called availability zones, within the same Azure region, offering protection from a data center failure. For protection against a regional disaster, Geo-Redundant Storage (GRS) copies your data to a secondary region hundreds of miles away. Read-Access Geo-Redundant Storage (RA-GRS) builds on GRS by also allowing read access to the data in that secondary region, which can keep an application running during a primary region outage.
Domain 3 of 3
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