Hi,
I just went through the process of setting up a UGreen DXP4800 Plus with TrueNAS Scale and wanted to post some things I noticed or general tips I ran into along the way.
Install
You can boot into Clonezilla on a USB stick and clone the 128gb SSD that comes with the UGreen NAS to backup the UGOS. You do not need a 128gb thumb drive, although that would be best to be 100% safe, as the actual OS image is a fraction of the boot drive capacity.
This way you can install TrueNAS scale onto the drive that comes with the NAS and keep both NVME slots empty for other drives.
Enclosure LEDs
There are scripts available that will make the enclosure LEDs work so you don’t have to watch them spin around at maximum power after installing TrueNAS. I can’t include the link, but it should be easily findable from google and there is a script specifically for TrueNAS install.
NVME Backup
I only wanted a single NVME drive to start for VMs and apps and I wasn’t looking to use it as a RAID volume, but for some extra protection you can setup a local replication job on the Data Protection tab to copy the snapshots from the NVME drive to one of your other pools with redundancy.
VM and Networks
If you want the VM(s) and apps on the NAS to be able to talk to each other, you should add a bridge under Networking and add the NIC you are using to it, then add the bridge as the network device for the VM(s). By default if you just add the NIC directly to the VM setup, even if it is the same one you use for networking in TrueNAS, the app’s ports will not be able to be seen from the VM. This is good for running MQTT as an app while having Homeassistant as a VM.
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@radon199
Are these your personal observations and experiences or something that was generated by an AI?
Why do I ask? If it is AI generated, then any post that is mainly AI created, needs to be posted in the posting. Something like “Some or All of this material was from CHATGPT”.
It isn’t that the data isn’t appreciated, but AI gets a lot of stuff wrong in our technical world. It makes assumptions quickly.
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Not AI generated, I wrote it.
I wanted to post in case someone else goes through the same setup, since installing TrueNAS on the UGreen was the main reason I bought it, as I wasn’t super keen on using their UGOS.
The network bridge in particular caught me up since while the docs did mention that you needed the bridge if you wanted to connect to the NAS itself, I didn’t think I needed to go through that to see any port on the NAS at all outside the VM.
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Thank you. Every once in a while we have to ask when a first posting looks like AI generated. Hey, did you program AI? Skynet maybe? 
Welcome to the TrueNAS forum. I hope you gain what you desire out of this site.
How is it so far? I just got my 4800 plus and trying to decide to install truenas or keep ugos. I just contacted the support to get the OS image, so I don’t need to keep 128gb backed up somewhere safe.
I am a full stack dev, so server side thing is not an issue, but I don’t plan to debug days just to run media servers mainly 
(of course I plan to run a few app through docker/docker compose)
Btw, do you have US3000 ups? Does that work with truenas?
It has been flawless so far. No issues with uptime or the device at all.
It really is a plug and play solution in my mind, and I have setup both the VM and multiple apps along with the general NAS setup.
I added an extra stick of memory as well to give a bit more buffer since I started running frigate on it.
TrueNAS uses NUT for UPS monitoring and I don’t see the Ugreen UPS listed there so my guess is it has either not been added yet or has an incompatible protocol.
Personally I am going for a more closed network so wanted to go with a fully custom solution but no matter how I priced it out as a m-ITX system I couldn’t match the cost of the Ugreen, and it really is just a Linux mini pc at heart.
You are trading off features like the ability to play media directly to the hdmi port, those are features that will never come to trueNAS I imagine.
