The software versions and levels on Data Center 1 and Data Center 2 must be identical for a planned switchover and switchback testing,
You must validate the following applications and platforms:
Avaya Aura® System Manager
Avaya Control Manager
Avaya Breeze® platform
Avaya Aura® Communication Manager and ESS
Avaya Aura® Application Enablement Services
Avaya Analytics™
Avaya Oceana® Snap-ins
For software upgrade maintenance windows, it is acceptable to have different software versions during the upgrade process.
For unplanned maintenance windows due to application failures, there is no difference in software versions. Instead, you can create a checklist to record the software versions of each application for DC1 and DC2.