# Reinstalling the Production CommServe Host

The production CommServe host can be rebuilt in the event of a failure, or to migrate to a new hardware.

## Before You Begin

Keep a note of the SQL client from the CommServe LiveSync details page. It is critical to reinstall the software using the same name.

## Procedure

1. Perform a production failover to switch the CommServe server from the currently active CommServe host to a standby CommServe host.

   Note

   If the production CommServe host is not available, perform the failover from the standby CommServe host.

2. Disable the Failover Transaction Log schedule associated with LiveSync operation.

3. If the CommServe host is available:

   Uninstall the packages installed in Instance 2 (or the instance with SQL Server Agent and CommServe Failover packages) first, and then uninstall the packages in Instance 1. For more information on uninstalling software, see Retiring a Laptop or Computer.

4. Install the packages in the new or rebuilt CommServe host as described in Installing the Standby CommServe Host.

   Important

   The following important steps must be followed during the installation:

   - On the Failover Install Option page, make sure to choose This is a standby node option.

   - On the Client Computer Information page associated with the SQL client, make sure to use the same name that was used previously for the production SQL client. (See the Before You Begin section in this page.)

   - If the reinstalled CommServe has a different SQL Instance name than the original CommServe, manually delete the original SQL Instance from the SQL iDA of the reinstalled Failover client, as CS Live Sync does not support having two SQL Instances present on this agent.

5. Enable the Failover Transaction Log schedule associated with LiveSync operation.

6. Optional: Verify the setup from the production CommServe host to ensure that the default components are installed and configured properly. For more information on verifying your setup, see Verifying the Default Setup.

7. Optional: Perform a production failover to switch the CommServe server from the currently active CommServe host to a standby CommServe host.

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