High availability storage is what the Ceph integration is for.
Edit: though it’s kind of a pain to set up and probably way overkill. A separate TrueNAS or similar appliance with a 10 gig uplink will be easier and probably just as reliable for your use.
This is not a good idea unless you really know what you’re doing. High capacity batteries and high power circuits are pretty dangerous and there’s a surprising amount of complexity to build a reliable UPS. You’d probably have better luck modding an existing UPS (say from a flea market) to use a bigger battery if you are really desperate to save every dollar.
Plus making it yourself you probably won’t save any money unless you already have all of the tools required, which is pretty extensive if you wanna do things right/safely.
The settlement payout is on hold pending his bankruptcy case is why they haven’t done something like this. However, lawyers for the families are in fact trying to have his assets placed in a trust or have the bankruptcy case cancelled outright because of his spending. By design it’s a slow, complicated process where Jones has lots of legal (and illegal) avenues to delay paying. Fortunately Jones is so stupid and outlandish that he’s likely hurting his own case so I wouldn’t be surprised if a judge slaps him with more severe sanctions.