Thanks a lot for all the great advice, that is very useful. It all makes sense.
> On 27 Nov 2022, at 21:10, Tomasz Rola <rtomek@ceti.pl> wrote:
>
> On Sun, Nov 27, 2022 at 09:37:19AM +0000, James Johnson wrote:
>> Hi all,
>>
>> OpenBSD is amazing. But I need help in configuring it correctly as a
>> remote server, rarely used.
>>
>>
>> The main thing I am trying to do is to make it sleep every now and
>> then to protect resources. I am very flexible on how to do this, but
>> have been unable to do so.
>> Here's what I tried :
> [...]
>
> So to sum up your requirements, you want a self driving box which
> waits, and once every month or six wakes up, does something, then goes
> idle again.
>
> I would avoid power down/up completely - boot takes time, and fsck
> takes some more time. Also, AFAIK electronics wears down every time it
> goes on-off.
>
> Modern HDD are said to live to 50000 on-off cycles, so assume 20000
> cold boots. But random things can happen, because on-off means power
> spike. If you have no problem with eletricity, I would keep it going
> all the time. I would however minimise writes. Work on temporary data
> in ramdisk, write results to disk. Something like this.
>
> BIOS battery goes down faster when computer is powered down. When it
> is up, clock gets power from the wall and saves the battery. I assume
> the modern CMOS battery will only keep the clock for about a year
> without power and it will not recharge when you power up. After that
> time (and before that time, too, but less necessary), every boot
> should include query to time server and adjusting the hardware clock.
>
> I would buy a decent PSU. Last time I wanted to know, Seasonic was the
> maker of best ones a mortal could buy. Their last unit I bought came
> with 10 years warranty. AND, according to description, it was built
> with classic electronic art, analog parts, no digital. So if you are
> so inclined, you can ask your electronic buddy to inspect it and
> perhaps even replace some parts with better ones. Or repair it. If
> microcontroller goes bunk, you are out of luck, I assume they somehow
> protect their eproms.
>
> If you plan to store some long term data on this box, I would avoid
> SSD. They are fast but they also can go bunk and when they do, chance
> of recovering data is close to nil (from what I have read).
>
> I would consider putting the box in a plastic bag to protect from dust
> and humidity. Dust will clog into radiators, make chips go hotter,
> ventillators work harder. I have not tested this, however. I assume
> thermal exchange with loose bag over the box should go ok, but you
> need to test it very carefully, monitoring temps all the time - all
> temps.
>
> HTH
>
> --
> Regards,
> Tomasz Rola
>
> --
> ** A C programmer asked whether computer had Buddha's nature. **
> ** As the answer, master did "rm -rif" on the programmer's home **
> ** directory. And then the C programmer became enlightened... **
> ** **
> ** Tomasz Rola mailto:tomasz_rola@bigfoot.com **
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