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5 georedundant - Coggle Diagram
5 georedundant
replicated three times within the primary region,
and then this set is replicated to a secondary region
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secondary region is automatically paired to the primary region based on the primary region you selected.
- your data in the secondary region is inaccessible until the primary region has failed
- DNS entries that point to the primary region are updated to point to the secondary region
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definition
Resiliency
ability to recover from a failure and continue to function, to avoid downtime and data loss
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Eventual consistency
- all the transactions on the primary region will eventually appear in the secondary region
- data isn't lost but there might be some lag
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- three copies across fault domains, or racks of hardware,
- within a single datacenter facility
- in one region
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- three storage clusters in a region
physically separated
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Same as GRS, but offers read access in the secondary datacenter in the other region
Data redundancy
- Locally redundant storage (LRS)
- Zone-redundant storage (ZRS)
- Geographically redundant storage (GRS)
- Read-access geo-redundant storage (RA-GRS)
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- Failover is automatic and controlled by Microsoft.
- A manual failover of an Azure storage account isn't possible in a majority of the Azure regions.