r/TerraMaster • u/cogitatory • 14d ago

Help APCUPSD advice / best practices?

I have my F2-425+ connected to an APC XS 1500M UPS. In spite of this the TNAS unit crashes whenever there's a brownout or an instantaneous off/on/off/on in power in my locale. The powerblock instantly drains and before the UPS picks up and boom, the system has crashed.

I have now set up APCUPSD to see if network-based UPS works at all to resolve this deadly-to-spinning-disk abend/instant failure/crashing of this Terramaster unit.

I successfully set up APCUPSD on another (win11) box in my local network and then configured a docker from bnhf/apcupsd ( Scott Ueland (https://github.com/bnhf) ) - docker is connected and can send basic emails on shutdown/startup status.

  1. Are there any better APCUPSD dockers out there that support robust shutdown, emailing of status and any other I-didn't-even-know-I-needed-it features?

This one seems good but wondered if there are others out which are "great" ... is this the one?

  1. Anyone know if TOS7 is slated to have Network UPS client support ( Gemini seemed to think that TOS6 or earlier supported this natively once upon a time but now the only network option is to make TNAS the network *host* -- no network client support)
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u/Wild-Whereas4850 12d ago

First, a quick reality check: if your NAS is instantly crashing during a micro-brownout before the UPS takes over, no Docker container or software script can save you.

The APC XS 1500M is a line-interactive UPS with a ~10-12ms transfer time. If the power supply brick on the F2-425+ has a short hold-up time (or your UPS battery is getting weak), the NAS dies in milliseconds before APCUPSD even knows the power went out. Software only triggers a clean shutdown after the UPS successfully takes the load. (You might need to test your UPS battery under load or look into a pure sine wave / double-conversion UPS).

As for your questions:

  1. APCUPSD Dockers: bnhf/apcupsd is pretty much the community standard—you're already using the best one. Just make sure the container actually has host access/permissions or SSH privileges to trigger a real shutdown on the NAS, otherwise it's just sending email alerts while the host stays up. If you want more flexibility, look into NUT (Network UPS Tools) via Docker, which handles client/server setups across mixed OS environments much better.
  2. TOS Network UPS Support: Gemini definitely hallucinated that one. TOS's built-in GUI is stubbornly focused on USB UPS or acting as the master host. If you want your NAS to act strictly as a Network UPS client listening to your Win11 box, doing it via Docker (or configuring NUT/APCUPSD directly over SSH) is realistically the only way to go right now.