Supported versions and recommended number of instances for High Availability
Supported SQL Server versions
PDS supports the following SQL Server data service versions:
Data service | Version |
Microsoft SQL Server |
|
Recommended minimum number of instances for High Availability
| Minimum number of instances | Reason |
|---|---|
| 3 | In an Always On availability group, you typically have one primary and at least two secondary replicas for synchronous replication and automated failover, requiring a minimum of three instances for HA. |