Redundancy Options in Azure Storage Account
Azure Storage offers various redundancy options to ensure data durability and high availability. Here's a quick guide to get started:
- Locally Redundant Storage (LRS): LRS replicates your data three times within a single data center in a region, providing protection against hardware failures.
- Zone-Redundant Storage (ZRS): ZRS replicates your data across three availability zones within a region, offering higher durability and availability by protecting against data center failures.
- Geo-Redundant Storage (GRS) and Read-Access Geo-Redundant Storage (RA-GRS): GRS replicates your data to a secondary region, hundreds of miles away from the primary location, ensuring data durability even in the event of a regional outage. RA-GRS provides read access to the secondary region.
- Geo-Zone-Redundant Storage (GZRS) and Read-Access Geo-Zone-Redundant Storage (RA-GZRS): GZRS combines the benefits of ZRS and GRS by replicating your data across availability zones and to a secondary region. RA-GZRS offers read access to the secondary region.
These redundancy options help you choose the right level of data protection and availability based on your specific needs.
Comparison Table
| Option | Replicas | Protection Level |
|---|---|---|
| LRS | 3 copies in one datacenter | Hardware failures |
| ZRS | 3 copies across zones | Datacenter failures |
| GRS | 6 copies (3 primary + 3 secondary) | Regional failures |
| GZRS | 6 copies (3 zones + 3 secondary) | Zone + Regional failures |
🎬 Video Explanation
Click the video below for recorded explanations by Neeraj Kumar.
