DigitalDilemma

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Joined 2 years ago
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Cake day: July 22nd, 2023

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  • You would need a third device monitoring both for this edge case. Once the server has been told to shut down, it’s going to shut down.

    The third device (also on the UPS, like an Rpi or ESP) can then check for power availability through the UPS and whatever logic you want to apply, can then use wake on lan to the server to power it up once it shuts down.








  • I don’t think I can agree with that, and I’m a pretty agreeable chap.

    In the days when people actually cared about the html layout and readability, FP spammed everything hugely, and inserted a lot of terrible cruft. Inventing zillions of new <style> tags for everything, even when the user just wanted to italicise a word. Use a <i> tag? No! We’ll invent a whole new style class and embed it in the headers.

    A few years ago I rather stupidly agreed to take over hosting of a website for someone that was dying. It had been written with FP and it took me months to de-cruft it using a lot of regexp and scrifting. (Some 8,000 images and around 2000 .html files).






  • Before this year, the thought of an entirely arbitrary block to things like American cloud services by America to its European allies would have seemed extremely unlikely. It would make no sense, the damage to America and it’s GDP would far outweigh any any political benefit.

    All of those reasons still hold true, but I absolutely assure you, European governments and companies all over have that possibility firmly in their risk portfolio now. America tells microsoft to immediately not only stop selling products in Europe, but disable those already in use? Ditto Google. Ditto Apple. Ditto all the hundreds of IT hardware producers that are American. Want to cripple a foreign government that uses MS Office? Remotely disable it. job done. Sure, it would be illegal, but America’s government has no respect for law.

    (Even before this, several European governments were using open source (Germany, France, Austria, Portugal - there’s a list but this is less about idealism and more about protecting themselves from the unpredictable as well as not trusting America with their data any more. Every thing like this can only be seen as non Americans distancing themselves from America every way they can, and with good reason.)


  • Other have answered the runtime and load question very well already.

    I have three other points.

    1. Batteries degrade over time. Over-speccing your UPS means more likelyhood that things will hold up in three years time as the capacity given is for new ones. Plus, not running your UPS at 100% capacity reduces its stress. Again, more reliable.

    2. You can get a much better quality UPS by buying a second hand one without batteries off ebay and replacing them yourself, typically for a fraction of the cost of buying new. Plus you know you have new batteries. UPS is something where quality genuinely matters. I’ve had to carry a cheap and badly made UPS out of an office whilst it was on fire, so now I spec more carefully. (And ensure they’re metal bodied!)

    3. Consider what you NEED to power. What sort of power cuts are you expecting? Does it matter if something goes down?

    I UPS my servers and my main desktop, but not my routers, nor my wifi or IOT things. My internet provider also goes out when there’s a cut (I’m on a mesh system so rely on neighbours, who will typically also be down) and I can’t do much without power anyway, but it keeps the disks spinning. We typically get very short automated outages here of less than 10s (yesterday was a bad day, we had 9 within 2 hours)