The easiest way to disable unnecessary services is to uninstall them with aptitude, or whichever package manager you like. Try terminating services one by one, and see if anything bad happens. If nothing bad happens, you can probably uninstall it. On the other hand, if the system does get wonky a reboot should fix it. Or, you can research the services by name and decide whether to uninstall them. (avahi-daemon for example is a good idea to uninstall.)

To make the GUI not run, uninstall your display manager (gdm, xdm, nodm, or whatever) and uninstall your xorg server or wayland server. There may be GUI programs remaining after that, but they will only be consuming disk space, not RAM or CPU.

If the battery is old and holds little charge, you may save a few watts by removing it and throwing it away, instead of letting the system keep it topped off.

Get a power meter, such as a Kill-a-watt device. Then, experiment with different settings. If it’s consuming less than 30 watts, you’re probably fine. If you live in the US, one watt-year is about one US dollar (or a little more), so for every watt it consumes, that’s about how much you will pay per year for its electricity.

draw .io is closed source.

Yeah, it’s definitely a problem, and genetic information could end up getting linked. Even if a person thinks they might not have DNA in any existing database, whether criminal, medical, or otherwise, there’s no telling what might happen in the future. I can think of a few different ways a person might involuntarily, through no fault of theirs, get their DNA forcibly taken with no legal recourse.

Every path here will have some tradeoffs. But the odds of getting linked are probably much lower outside your home country.

I voted you down because HIPAA absolutely does include privacy provisions, and requires written consent for data use in the way I described above.

My best recommendation would be to go to a testing lab and provide a fake name. It should work. I’ve never been ID’d at any doctor’s office, and one time did even receive healthcare under a fake name with no trouble. Of course, that means your insurance won’t cover anything, but that’s the unfortunate reality of US healthcare. Also, they probably won’t delete your data. HIPAA includes no right to be forgotten, and in some cases, may even mandate retention for several years.

Sorry I don’t have a better solution. I think your best bet is to distance this genetic data as much as possible from your real identity.

Alternately, you could try going somewhere outside the US.

I completely agree that HIPAA is dead. One time when I went to a new doctor’s office, totally unaffiliated with any doctor I’d ever seen before, the doctor instantly pulled all my medical records from several other places. They didn’t even get my verbal permission; they just did it. If that’s the level of security on these databases, and doctors are allowed to access them on old unsupported Windows computers, then it’s almost certain that the databases have tons of undetected data breaches. They’ve probably been scraped completely by multiple attackers.

I cannot recommend any USB-connected drive for long-term use. (Only for portable devices that get plugged in for a little while at a time.) In the long term, any USB drive will randomly reset during periods of heavy use – including heavy writes, meaning some data will get lost.

USB enclosures tend to just crap out completely after a year or two, if used continuously on a server. I know because I twice used 1TB external drives with OpenWRT (home router) devices. The data will be safe on the drive, but you’ll have to replace the enclosure.

1. My first recommendation would be to look very carefully at the chassis and see if there’s any way at all to fit another SSD inside it. 2.5" SSD’s are usually thinner than 2.5" hard drives, so it may be possible, and most motherboards have more SATA ports than they need.

Is there possibly an NVMe slot on the motherboard? Or an open PCIe slot where you could put an NVMe adapter?

2. My second recommendation would be using a 2.5" hard drive. Newegg has a 5TB one for $135, but unfortunately that’s as large as they seem to go. It will be a bit slower than an SSD, but still probably around 150MB/s for sequential access.

3. My third recommendation, if money is really tight, would be an additional server, with a large 3.5" hard drive. This will be a lot cheaper than an 8TB SSD, but adds complexity, electricity use, space use, and possibly fan noise.

Using a VPN (like Tailscale or Netbird) will make setup very easy, but probably a bit slower, because they probably connect through the VPN service’s infrastructure.

My recommended approach would be to use a directly connected VPN, like OpenVPN, that just has two nodes on it – your VPS, and your home server. This will bypass the potentially slow infrastructure of a commercial VPN service. Then, use iptables rules to have the VPS forward the relevant connections (TCP port 80/443 for the web apps, TCP/UDP port 25565 for Minecraft, etc.) to the home server’s OpenVPN IP address.

My second recommended approach would be to use a program like openbsd-inetd on your VPS to forward all relevant connections to your real IP address. Then, open those ports on your home connection, but only for the VPS’s IP address. If some random person tries to portscan you, they will see closed ports.