LRS and ZRS provides redundancy only in primary region. No Data is going outside of the region.

Question

LRS and ZRS provides redundancy only in primary region. No Data is going outside of the region.

anurag sharma 0

LRS and ZRS provides redundancy only in primary region. No Data is going outside of the region. Can we read data from secondary data center in case of ZRS.

Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-26T11:56:48.4+00:00
Hi @anurag sharma,

Actually, you cannot read data from a secondary data center with Zone-Redundant Storage (ZRS). ZRS ensures redundancy by synchronously replicating data across three availability zones within the primary region only. This setup guarantees high availability and durability within the primary region but does not replicate data to a secondary region.

So, if you need the ability to read data from a secondary region, you need to use Geo-Redundant Storage (GRS) or Read-Access Geo-Redundant Storage (RA-GRS). These options replicate data to a secondary region. But RA-GRS, specifically allows you to access the replicated data in the secondary region during an outage in the primary region.

For additional reference, please refer below:

Azure Storage redundancy

Azure Files data redundancy

I hope the above helps in addressing the query.

Please let us know in the comments below, if the issue is resolved or still persists. We will be glad to assist you closely.

Please do consider to “up-vote” wherever the information provided helps you, this can be beneficial to other community members.
Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-27T03:11:57.4566667+00:00

Hi @anurag sharma,

Just checking in to see if the abve answer helped. If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.
Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-28T09:34:51.99+00:00

Hi @anurag sharma,

Your contribution is highly appreciated. Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

1 answer

Your answer

Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-26T11:56:48.4+00:00

Hi @anurag sharma,

Actually, you cannot read data from a secondary data center with Zone-Redundant Storage (ZRS). ZRS ensures redundancy by synchronously replicating data across three availability zones within the primary region only. This setup guarantees high availability and durability within the primary region but does not replicate data to a secondary region.

So, if you need the ability to read data from a secondary region, you need to use Geo-Redundant Storage (GRS) or Read-Access Geo-Redundant Storage (RA-GRS). These options replicate data to a secondary region. But RA-GRS, specifically allows you to access the replicated data in the secondary region during an outage in the primary region.

For additional reference, please refer below:

Azure Storage redundancy

Azure Files data redundancy

I hope the above helps in addressing the query.

Please let us know in the comments below, if the issue is resolved or still persists. We will be glad to assist you closely.

Please do consider to “up-vote” wherever the information provided helps you, this can be beneficial to other community members.
Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-27T03:11:57.4566667+00:00

Hi @anurag sharma,

Just checking in to see if the abve answer helped. If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.
Hari Babu Vattepally 3,345 Reputation points Microsoft External Staff Moderator

2025-03-28T09:34:51.99+00:00

Hi @anurag sharma,

Your contribution is highly appreciated. Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

Answer 1

Hello anurag sharma - Thanks for reaching out over Q&A Forum.

Read-access geo-redundant storage (RA-GRS) or read-access geo-zone-redundant storage (RA-GZRS) configurations permit read access to the secondary region. You won't be able to read this via LRS or ZRS redundancy configuration. Below link explains more on the same:

https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy#read-access-to-data-in-the-secondary-region

Hope this helps!

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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LRS and ZRS provides redundancy only in primary region. No Data is going outside of the region.

1 answer

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