I work for Vinchin as sales director. We develop and provide backup & recovery solution for xcp-ng users. Our backup product named Vinchin Backup & Recovery is an agentless backup software, it can back up XCP-ng, Xenserver, VMware, Hyper-v, RHV/oVirt and Openstack virtual machines.
If you are in need of a third-party backup solution, feel free to contact me at shall.ao@vinchin.com or send a message to sales@vinchin.com