I cannot make my redundant servers communicate and I keep getting the hardware alarm “Redundant Server not found”.

1. Check that you have set your [LAN]EarliestLegacyVersion parameter correctly.

• If upgrading from v7.20 use [LAN]EarliestLegacyVersion=7200.
• If upgrading v2015 use [LAN]EarliestLegacyVersion=7500.
• Check that you have run the Setup Wizard and set both servers to Networked mode.

2. Set the same server password on both servers in the Setup Wizard.

 

Check your system’s power options: Control Panel | All Control Panel Items | Power Options.

 

After finalizing the upgrade process and confirming that runtime is fully functional, we recommend removing or updating the following .INI parameters. You will need to restart the servers after changing the parameters for the changes to take effect.

• [Alarm]SavePrimary: remove this parameter.
• [Alarm]SaveStandby: remove this parameter.
• [Debug]Kernel = 0: this is to enhance security and keep operators out of the kernel.
• [LAN]EarliestLegacyVersion: remove this parameter.

It is important to note that after removing the EarliestLegacyVersion parameter, the next time you change your user’s passwords, you should change all the passwords on one server, and then roll out the updated project in the same order in which you conducted the online upgrade (primary server, clients and then standby server). Refer to KB article Q7865 for more information.