Hello Sean
The option of enabling 802.1Q is independent of the configuration of Etherchannel. You can enable or disable a trunk on the NAS end of the link whether you have configured EtherChannel or not. In any case, it seems that the NAS is capable of using trunk encapsulation. There is also a field to indicate which VLAN or VLANs will be included in the trunk. To be honest, I’m not sure what advantages the use of a trunk on the NAS will have, other than allowing the device to have multiple IP addresses, one within each VLAN, allowing multiple subnets to have access to it directly.
I hope this has been helpful!
Laz