Complete the backup prerequisites before you begin your upgrade.
Verify that your source installation is fully installed and configured.
Log in to your vSphere Client and for each appliance in your source environment, backup all the vRealize Automation appliance configuration files in the following directories .
Backup any files you have customized, such as DataCenterLocations.xml.
Create a snapshot of each virtual appliance and IaaS server. Adhere to regular guidelines for backing up the entire system in case vRealize Automation upgrade is unsuccessful. See Backup and Recovery for vRealize Automation Installations in Managing vRealize Automation.