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Cake day: June 8th, 2023

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  • bloodfart@lemmy.mltoLinux@lemmy.mlWhich distro?
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    2 days ago

    So you have a lot of suggestions in this thread.

    I have an unconventional one:

    Red hat.

    You can use it for free as long as you register on their website.

    The benefit: lots of documentation, a significantly different way of thinking about things (it asks you to define a compliance posture out of the box lol) and a package manager that does a lot of things right.

    You said yourself youve been in the game for a while. Why not try being agent smith instead of neo?



  • The data is stored in little ccd cells. It’s recorded as an analog voltage. There is no difference between analog voltages and digital voltages, I’m just using the word analog to establish that the potential is a domain that can vary continuously.

    When you read the data, the levels of the voltages are checked and translated to the digital information they represent.

    To determine the level of a voltage, a small amount of current is allowed to flow between the two points being measured. It’s a very small amount. Microamps and less.

    When you draw current from a charge carrying device the charge, as represented by the potential between its negative and positive terminals, the voltage, decreases.

    When the controller in the ssd responsible for reading voltages and assembling them into porno.mov doesn’t get a clear read, it asks again. As the ssd ages, parts of it can be re queried hundreds of times just to get commonly read information into memory like system files.

    So the ssd degrades on read, and the user experiences this as “slowness”.

    Would rewriting the data fix this problem? Yes. Using either badblocks -n, dd or a program called spinrite, rewriting the data fixes that problem.

    Why doesn’t the ssd just do it? Because the ssd only has so many write cycles before its toast. Better to rely on the user or more accurately the host os to dictate those writes than to take on that responsibility.



  • There isn’t anything that meets your criteria.

    Optical suffers from separation, hard drives break down, ssds lose their charge, tape is fantastic but has a high cost of entry.

    There’s a lot of replies here, but if I were you I’d get last generation or two’s lto machine from some surplus auction and use that.

    People hate being told to use magnetic tape, but it’s very reliable, long lived, pretty cost effective once you have a machine and surprisingly repairable.

    What few replies are talking about is the storage conditions. If your archive can be relatively small and disconnected then you can easily meet some easy requirements for long term storage like temperature and humidity stability with a cardboard box, styrofoam cut to shape and desiccant packs (remember to rotate these!). An antifungal/antimicrobial agent on some level would be good too.





  • How much (metal, refined, produced on earth) wire would you say is required to produce an air (actually vacuum, but we know air core really well so there’s math for them) core electromagnet which can generate a field capable of deflecting solar wind over the area of its pv array? In order to maintain that field strength, how much current is required? Can it be supplied by a pv array equal in area to the effective field area? How many of those are needed to cover the area of mars?

    That’s-a lotta metal!

    Also speaking as a person who deals with e-waste daily, it’s both by volume and mass composed of petroleum products. Fiberglass is reenforced plastic. Ics are 90% plastic by volume. Discrete components are made of petroleum distillates in a lot of cases and encased in them in even more cases!

    Even if you only considered the boards as the e-waste and not the plastic cases and bodies themselves, those dont exist in a vacuum like our hypothetical electromagnets, a reduction in printer boards means fewer printers which are almost completely just plastic.


  • The scale of what you just described is really goofy.

    It’s also a very delicate shield against a very serious problem.

    I don’t think it’s feasible to protect a mars-diameter disc of massive magnets from damage by either normal objects traveling through the area or from some human engineered attack.

    If you’re imagining the capacity to create such an emplacement, don’t you imagine that such phenomenal effort and wealth of resources would be better spent solving some terrestrial problem?

    There’s a real difference between e-waste, which is mostly byproducts of the petroleum refining process with electronic components smeared liberally on, many of which rely on petroleum byproducts themselves and electromagnets, which are, at the scale you’re discussing, massive chunks of metals refined, shaped and organized into configurations that will create magnetic fields when dc is present.

    I have a hard time imagining a level of focus required to bridge that gap.