Yes, you can do everything like that on Umbrel on a RPi4. I am doing it now.
Pi 4 or Pi 4 Model B? Are you running a variety of things at once on it? Given I want to simplify everything on to one device, I'm looking at running all the bitcoin apps I mentioned as well as potentially streaming media to multiple devices simultaneously. Can your Raspberry Pi handle all that?
IMO, you are better off getting something like this. [Not that actual one but a micro PC along those lines]
I'd be happy to use something like that rather than a SBC, but a quick search seems the power draw on such devices will be anywhere between 5-10x more than a SBC. As I say, I'm looking for something with as little power draw as possible (for potential off grid use) while still being able to handle everything I've listed above, so I'd probably only buy a more power hungry device like that if it was absolutely necessary.
Running Debain along with mirrored drives. IF you are running your own LN node you don't want to have to deal with the recovery and everything else if 1 of the drives dies.
Good thinking. I already run RAID on my main storage, and I have some spare drives I could use to RAID everything except the blockchain itself.
AND it's got more power (not computing power just raw electrical power) so if you do want to plug in a bunch of USB devices for some reason you are not going to be getting the under volt warnings.
I wouldn't plan on ever doing this. I really just want something I can set up and forget about.
My usual answer would be: "get a laptop with low power CPU" (and 16 GB RAM), but after checking the Orange Pi 5 specs, that's consumes even less power. I just checked my spare laptop: it uses 8W while "being on" with the screen on the lowest brightness. That includes it's SSD, and it would be a tad less less with the screen off. I like laptops because they're cheap and come with build-in UPS. For your purpose, it would either need a large SSD, or hook up a cheap USB HDD and move the large data there.
Yeah, it seems an Orange Pi 5 at idle will consume <2W. If I was to use a laptop, I'd probably just disconnect the screen and any other hardware I don't need to reduce the power draw, though.