There is an update to Double-take 8.4 available for Prinergy 10.0. Please contact your regional support office and reference Knowledge Base Answer ID 75659 to have it installed.

Double-take 8.2 should continue to work with Prinergy 10.0, but 8.4 is the officially qualified version. The DT 8.4 update fixes the issue described in Answer ID 75473, so its recommended to update ASAP.

Before updating, you will need to ensure you are eligible for a new Double-Take 8.4 license. Please contact your regional support office with your Double-Take 8.2 and Prinergy serial number, and they will confirm your eligibility.

When upgrading the primary server running on Windows 2016/2019 operating system with Double-Take 8.2 /  8.4, perform the tasks listed in the specified order.

Note you can perform the steps below when upgrading to Prinergy 10.0 and then upgrade double-take 8.4 after

1. Go to Windows Services on both primary and EPM servers and STOP the Double-Take and Double-Take Management services and CHANGE them both to Disabled.
2. Upgrade the primary server.
3. Upgrade the secondary (failover) server.
4. Go to Windows Services on both primary and EPM servers and CHANGE the Double-Take service to Automatic and start it, then CHANGE the Double-Take Management service to Automatic (Delayed Start) and start it.

Important reminder: do not start PrinergyDBRestore !!!!!!!!!

For more detailed instructions on connecting the PrinergyDB replication job, see the EPM (Emergency Platemaking) and Hot Standby with Double-Take for Prinergy 9.x Installation Guide
Note: After completing the upgrade of all servers, a failover test must be completed to ensure the hot standby support is working correctly.