Re: Hardware for a back up server? [WAS Re: How to use dmsetuup?]
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.
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.
-dsr-
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