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Cake day: June 11th, 2023

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  • carzian@lemmy.mltoSelfhosted@lemmy.worldServer for a boat
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    4 months ago

    You’ve gotten a lot of good answers, so I’m going to do some out of the box thinking - maybe it will spark a few ideas.

    Goal:

    • self hosted server on boat

    Issues:

    • size
    • power
    • corrosion

    So if I were going to do this myself, I’d start with a pelican or other similar watertight container. We don’t want the equipment getting wet, and we don’t want it exposed to the salty air.

    I’d probably pick a usff computer, like a dell 9020 or maybe a framework motherboard. To get the storage, I’d get one of these to add multiple sata ports to the computer. Then its a matter of getting a bunch of ssds and powering them. I think the 12v goal is going to be too restrictive, most laptops need 19v to charge, so I’d just bite the bullet and get an inverter. If you’re really tight on power you could go with a pi, but the framework motherboard/usff both use mobile processors, and shouldn’t draw too much while idle.

    Any wires that pass though to the case should be made through waterproof bulkheads.

    Personally I’d nix the HDMI out requirement. One more port to keep track of and it complicates the self hosting. If you want it for media streaming to a TV then I’d recommend a roku and just run a jellyfin server on the computer. If you want it for server debugging I wouldn’t bother running it out of the case.

    The last thing I’d do is figure out cooling. For this I’d probably create some sort of closed loop heat exchanger from the case to either the outside air or the lake/ocean itself. This could be as simple as a pump running water through two radiators, one in the case and the other outside or just dumped overboard. If you know your power usage ahead of time you might be able to get away with a peltier element, dumping the heat outside the case.

    I’d probably put this all on its own power system, get a solar panel, battery, inverter, etc. It could even get topped off by the boat’s system if it needs extra juice.

    Also whatever you do, I’d figure out a way to ensure you’re giving your system a clean and steady 12v.


  • carzian@lemmy.mltoSelfhosted@lemmy.worldcurrent best HDD-model choice
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    5 months ago

    I’ve always liked the ultrastar line. Used to be made by HGST and then WD bought them. I’m using specifically the HC530 14tb. The line has a long history of being very reliable enterprise drives.

    I’ve bought mine from both goharddrive and serverpartsdeals. Both are reliable resellers of used storage. They’ll warranty the drives for 2 or 5 years depending on which you to with. Prices are ~$130-$150.

    Be aware you might need to do the electrical tape over some of the power pins hacks depending on your setup.

    Ps. One of the listings for the HC530 on goharddrive or serverpartdeals is incorrectly labels as HC520. Just pay close attention.


    As far as raid goes, Raid 10 is currently very popular for its speed and drive failure tolerance. Remember, raid is not a replacement for the 3-2-1 backup rule. Raid has some fault tolerances for bad hard drives, but doesn’t protect against a failed raid card, fire, flood, robber, acts of god, etc.

    You can also look into zfs and truenas if you feel inclined. Be aware that if you go with this setup, ecc ram is basically a requirement













  • Theres no such thing as “real stainless”. Stainless steel 304 is corrosion resistant, it’s the cheapest and most common. 316 is better at corrosion resistance and is “marine grade” since it will hold up better to salt water. 316L is some of the best at resisting corrosion, it’s more expensive than 304 and is used in lab and surgical equipment. There are a lot of other types, like 309 for higher heat applications, etc.

    Cybertruck is probably made from 304.

    Definately not supprised that cybertrucks are having this issue. Especially with road salt in the winter. I’m sure the engineers at Tesla saw this coming too.



  • As someone else suggested, there are plenty of kde apps that could use some devs.

    Kde plasma multi-monitor support could also use some love, though its much better than it was a year ago.

    I know that mobile linux could definately use more devs, if you want to stretch the meaning of desktop 😁. Kde plasma mobile specifically needs help porting their stuff to qt6 for the up coming plasma 6 release.