ZENworks 7 Servers cannot manage ZENworks 6.6.x devices. As you migrate to ZENworks 7, you should maintain at least one ZENworks 6.6.x Server until you've upgraded all ZENworks 6.6.x devices to ZENworks 7. For information about the platforms that ZENworks 7 supports as managed devices, see Managed Device Requirements.
ZENworks 7 Servers and ZENworks 6.6.x Servers can manage ZENworks 7 devices because the ZENworks 7 Agent can communicate with both server versions. However, management of a ZENworks 7 device by a ZENworks 6.6.x Server is limited to obtaining software packages from the server. ZENworks 6.6.x transactions are not recognized by the ZENworks 7 Agent.
In general, even though you can use the ZENworks 7 Agent with ZENworks 6.6.x Servers, we recommend that your managed devices continue to use the ZENworks 6.6.x Red Carpet® Daemon with your ZENworks 6.6.x Servers until you've set up your ZENworks 7 Servers. Then, when your ZENworks 7 Servers are ready, upgrade your managed devices to the ZENworks 7 Agent.