---
title: Triggering failover in a topology
description: For PingDataSync servers in a topology, you can trigger a failover to another server instance if the active server isn't operating as expected.
component: pingdirectory
version: 11.0
page_id: pingdirectory:pingdatasync_server_administration_guide:pd_sync_trigger_failover_topology
canonical_url: https://docs.pingidentity.com/pingdirectory/11.0/pingdatasync_server_administration_guide/pd_sync_trigger_failover_topology.html
section_ids:
  steps: Steps
  choose-from: Choose from:
  example: Example:
---

# Triggering failover in a topology

For PingDataSync servers in a topology, you can trigger a failover to another server instance if the active server isn't operating as expected.

## Steps

* Trigger a failover to another PingDataSync server instance:

  ### Choose from:

  * Stop the active server instance by running the `stop-server` command.

  * Increase the value of the `sync-server-priority-index` property to lower the priority of the active server instance.

    #### Example:

    ```
    $ bin/dsconfig set-external-server-prop \
        --server-name intra-sync-<server:port> \
        --set sync-server-priority-index:3 \
        --no-prompt --applyChangeTo server-group
    ```

    |   |                                                                                                                                                                                                                                           |
    | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
    |   | Learn more about the [`sync-server-priority-index` property](https://docs.ping.directory/PingDataSync/10.2.0.0/config-guide/sync-server-external-server.html#sync-server-priority-index) in the PingDataSync configuration documentation. |