Message logs in the Management Console of the cloud failover appliance (CFA) show the following error if the CFA cannot connect to a backup client:
bnet.c_1011 Could not connect to storage daemon on CFA-IP:9103. ERR=Connection refused
Steps to resolve
Our services are not running on the client. A firewall may be blocking the connection from the client to the CFA on port 9103.
A quick backup of a reduced file set (with No Change on Full enabled) should help diagnose if the problem still exists after firewall changes or other network fixes.