You can perform a side-by-side upgrade of your current vRealize Automation 6.2.x environment using migration.
New vRealize Automation features introduce several enhancements along with the ability to upgrade or migrate to the new version. For recommendations and guidance before you begin the upgrade process, visit the vRealize Automation Upgrade Assistance Program web page at http://www.vmware.com/products/vrealize-automation/upgrade-center before you begin the upgrade process.
Migration moves the data in your current vRealize Automation 6.2.x environment to a new 7.1 environment that mirrors your current environment. Migration does not change your current 6.2.x environment. You cannot use migration to upgrade a vRealize Automation 7 or 7.0.1 environment to 7.1. If your current environment is integrated with vCloud Director, vCloud Air or has physical endpoints, you must use migration to upgrade. Migration removes all unsupported endpoints and everything associated with them in the 7.1 environment.