Related to 202404091859 Azure Storage Account and resiliency

Talks about redundancy for Azure storage account

Primary Region

Locally redundant storage (LRS)

3 copies in the same stamp/AZ

Zone-redundant storage (ZRS)

3 copies in different AZs

Secondary Region

Geo-redundant storage (GRS)

3 copies in a single location/AZ
and then 1 async copy in a different location in secondary region
In secondary region, using LRS 3 copies.
Also Read Access (RA-GRS)

Geo-zone-redundant storage (GZRS)

3 copies in 3 AZs and 1 async copy to different location in secondary region/In secondary region, using LRS 3 copies.
Also RA-GZRS

Block blob only object level replication

You can specify a different region to replicate to. Not just the secondary region.

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references:

https://learn.microsoft.com/en-in/azure/storage/common/storage-redundancy