Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?]
On Sat, Nov 11, 2023 at 6:20 PM Dan Ritter <dsr@randomstring.org> wrote:
>
> Jeffrey Walton wrote:
> > >From what I've read when comparing OpenMediaVault vs TrueNAS, it
> > usually comes down to the power consumption of the mini computer/mini
> > pc. 5W can save you $100 USD per year. Probably more now due to
> > inflation.
>
>
> 5W * 24h/D * 30 D/M * 12M/Y = 43200 Wh, or 43.2KWh per year
>
> If a KWh costs you: then 43.2KWh is:
> Massachusetts: 32c $13.82
> California: 30c $12.96
> Florida: 15c $ 6.48
> Germany: 42c $18.14
> Denmark: 37c $15.98
> United Kingdom: 33c $14.26
>
> So you need between 25 and 75W of 24/7 power usage to get to
> $100 US of savings in a year.
Right. Some can get into the 60W range, so you have to be careful
about what is being selected.
> A spinning disk draws about 7W. An SSD draws about 0.05W when
> asleep, 1.5W in "active idle", and up to 8W during writes.
Jeff
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