Last updated on March 20, 2023
Locally-Redundant Storage (LRS) |
Zone Redundant Storage |
Geo-redundant storage |
|
Replication |
Replicates your data 3 times within a single physical location synchronously in the primary region. |
Replicates your data across 3 Azure Availability Zones synchronously in the primary region |
Replicates your data in your storage account to a secondary region |
Redundancy |
Low |
Moderate |
High |
Cost |
Provides the least expensive replication option |
Costs more than LRS but provides higher availability |
Costs more than ZRS but provides availability in the event of regional outages |
Percent durability of objects over a given year |
At least 99.999999999% (11 9’s) |
At least 99.9999999999% (12 9’s) |
At least 99.99999999999999% (16 9’s) |
Availability SLA for read requests |
At least 99.9% (99% for cool access tier) |
At least 99.9% (99% for cool access tier) |
At least 99.9% (99% for cool access tier) for GRS At least 99.99% (99.9% for cool access tier) for RA-GRS |
Availability SLA for write requests |
At least 99.9% (99% for cool access tier) |
At least 99.9% (99% for cool access tier) |
At least 99.9% (99% for cool access tier) |
Available if a node went down within a data center? |
Yes |
Yes |
Yes |
Available if the entire data center (zonal or non-zonal) went down? |
No |
Yes |
Yes |
Available on region-wide outage in the primary region? |
No |
No |
Yes |
Has read access to the secondary region if the primary region is unavailable? |
No |
No |
Yes |
Supported storage |
General-purpose v2 |
General-purpose v2 |
General-purpose v2 |
Locally Redundant Storage (LRS) vs Zone-Redundant Storage (ZRS) Resources:
https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy
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