Synology DMS as NAS for automated backup not working

Hey you guys :slight_smile:

Since you provided so much help last time, I wanted to ask, if you have any input for us.

Our goal was to set up our Synlogy DMS as a NAS for an automated backup scheduled at a specific time on a specific day.
My HA is in our internal network (VLAN 2 for us).
We created a IoT-network in VLAN 10 and configured everything accordingly except that when we switch VLANs we lose the ability to use the NAS.
We thought this was a firewall issue and started trials and errors but nothing really works.
The minute we patch our VLAN 10 back to VLAN 2, everything works how it’s supposed to.

We tried multiple firewall rules and ran a last trial with the exact same rules we have while being in VLAN 2 (so technically HA should be able to connect properly to the Synology in order to back up correctly).

I screenshotted the problems for you (logs and codes).
Hopefully you guys have some input?
Greets x