This is typical Citrix... XS isn't really a priority over there and havent been for many years.

Like @olivierlambert wrote you should be using smart and tags instead - This is much more dynamic.

@kevdog this sounds like some kind of network-connectivity issue.
Is the XOA and xcp-ng within the same /24 network (broadcast domain) or is there a firewall between them?

To get rid of the tasks that are stuck you can try and restart the toolstack by executing "xe-toolstack-restart" in the cli of the xcp-ng machine.

Try schedule the job during some other hours, like when you can manage it and then run a ping from the xo-vm against the mounted target.
Do you see any packet loss?

@S-Pam Having a VIF for management and one for storage-traffic is a good solution, we do it that way to avoid crippling management during backups.

Well done xcp-ng team! Keep up the good work.

Welcome @BenjiReis !