SNMP shutdown of ReadyNAS 6.10.9 using CyberPower UPS not working

Hi StephenB​ , good to hear from you as well. Yes am well aware of the power requirements, I have a Ubiquiti rack with UDMP Max controller, multiple switches, UNAS Pro, HAOS laptop, etc., all connected to a Ubiquiti PDU Pro power distribution box that connects to the UPS. The shutdown thresholds I'm working with ensure the NAS are properly powered down before the controller/switches/etc lose power themselves. Everything works as expected, with two exceptions: (1) ReadyNAS on SNMP doesn't power down as the battery drains all the way to 0%, and (2) UGreen NAS UPS interface is a mess, doing silly things like trying to start its NUT server while configured as a NUT client, locked-out GUI, false connection failure notifications, etc. As noted, I've solved the ReadyNAS issue for now by configuring them as Remote UPS connections, and using HAOS NUT server to send shutdown signals when battery reaches 20%. It works, but wanted to check with you guys if you ever saw issues with SNMP UPS connection failing to execute shutdown. The fact that all 4 NAS boxes failed to shut down is probably a clue to whatever's going wrong.

Understood, was just giving you broader info. USB works just fine, same as SNMP in terms of connecting to ReadyNAS. I do not know if USB does a better job of actual shutdown on low battery, have not run that test yet. I spent hours debugging this with AI tools, no resolution yet. I moved onto the UGreen NAS issues, and discovered myriad issues, ticket has been opened with UGreen. 

Hi Sandshark​ , using SNMP profile v1, CyberPower. Deleted the example because it had serial number etc., apologies. It was just the basic view in Power settings showing the NAS was "online" and connected to the UPS. The UPS status shows green "online" when AC power is applied, and "on battery" in yellow when I pull the plug. So the connection works fine. Since I have 4 ReadyNAS units the USB option isn't great unless I do the "USB to the first NAS, then make the other 3 NAS remote to the first NAS". Ordinarily I would have just done this and punted. But I have another NAS now, a UGreen DXP6800 Pro, whose SNMP implementation is the worst I've ever seen. The only reliable method I've found with it so far is USB. Well, there's only one USB from the CyberPower. So I need SNMP to work on the ReadyNAS. Since I couldn't rely on SNMP properly shutting down the ReadyNAS, I ended up pointing all 4 ReadyNAS at the Home Assistant NUT Server (NUT Tools add-on). From there, I'm using HA to force the NAS shutdowns when UPS battery reaches some threshold, currently 20%. It works but took some effort, because the HA core couldn't execute a shell command directly due to lack of direct access to the NUT Docker container. Had to create a loopback SSH path from HA to the Advanced Terminal add-on, and run the FSD command from that shell. PITA and without AI I never would have figured this out. I'm still perplexed why basic ReadyNAS SNMP connection to the CyberPower didn't just work to shut them down. Ironically, SNMP connection to the UGreen actually did work to shut it down, but the UGreen OS keeps broadcasting a notification that the UPS is disconnected (every 5 minutes, super annoying). The only way I've been able to get rid of that notification is by USB-connecting the UGreen to the UPS. This power stuff is so ancient, antiquated, hard to use, just ridiculous.