Differences between Editions for SQL Server Always On Availability Groups

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Differences between the Developer, Standard, and Enterprise Editions for SQL Server Always On Availability Groups



SQL Server Always On Availability Groups is a high-availability and disaster recovery solution that is available in SQL Server Developer, Standard, and Enterprise Editions. However, the specific features and limitations of Always On Availability Groups may differ across these editions.


Maximum number of replicas:

Developer Edition supports up to two replicas (primary and one secondary).

Standard Edition supports up to two replicas (primary and one secondary).

Enterprise Edition supports up to eight replicas (one primary and seven secondary).

Readable secondary replicas:

Developer Edition supports readable secondary replicas for reporting or backup purposes.

Standard Edition supports readable secondary replicas for reporting or backup purposes. However, it does not support read-only routing.

Enterprise Edition supports both readable secondary replicas and read-only routing.

Availability databases:

Developer and Standard Editions support a maximum of one availability database per availability group.

Enterprise Edition supports multiple availability databases per availability group.

Backup compression:

Developer and Standard Editions do not support backup compression for Always On Availability Groups.

Enterprise Edition supports backup compression for Always On Availability Groups.

Automatic Page Repair:

Developer Edition does not support automatic page repair.

Standard and Enterprise Editions support automatic page repair.

These are just some of the key differences between the Developer, Standard, and Enterprise Editions for SQL Server Always On Availability Groups


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