Supported HA Search
On-premise HA Search supports two kinds of HA configurations: single data center and multiple data centers.
You can configure your On-Premise Search nodes in either of these HA configurations:
- Single data center, described in Designing single data center HA configuration
- Multiple data centers, described in Designing multiple data center HA configuration
To understand what you need for your HA search configuration, see Capacity and scaling considerations and Required nodes for an On-Premise HA Search service.
The following diagram shows the simplest HA configuration for search.
You might also find it helpful to understand how a single on-premise search node works before diving into Configuring the Search Service for High-Availability. For more information, see How On-Premise Search works and Configuring On-Premise Search service for high-availability.