Required Nodes for an On-Premise HA Search Service

To configure your On-Premise Search nodes for HA, you'll need to add a load balancer and a new service named Ingress Replicator for the Search service.

Table 1. On-Premise HA Search Configuration Node Requirements
Search Component Nodes Required Notes
Ingress Replicator 1 and 2 2 separate nodes It is okay to run an Ingress Replicator on the same host as a Search Broker. The Ingress Replicator journals everything to disk to guarantee all ingressed activities will be delivered at least once.
Search Service 1 and 2 2 separate nodes The Ingress Replicators are configured with the host:port of each Search Service.