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Comment cost of electricity ... lower than gasoline (Score 1) 828

You mean retail price, not cost. The cost of gasoline is not related to crude barrel cost in USA, and heavily loaded by taxes in UK (for example). The cost of electricity generation is often discounted by government; best example being nuclear electricity generation which is priced artificially cheap.

Comment Re:FreeNAS (Score 1) 182

...and you should budget for 8GB memory to run the ZFS filing system properly. Oh, and FreeNAS runs from a 2GB (min) USB stick, doesn't waste a HDD.

To soft-start the investment, you could buy the MB + RAM first, set it up in a cardboard box with a spare PSU and 5 any-size SATA HDDs you have kicking around.

Comment FreeNAS (Score 1) 182

I got a Fractal Design Array R2 Mini-ITX NAS Case which is gorgeous, takes 6 HDD in a small case. MB is Sapphire Pure Fusion Mini E350 AMD Dual Core E350 which is very low power, 5 x SATA III + 1 eSATA II, USB 3, GbEthernet.

FreeNAS 8 supports the hardware, and ZFS filing system is reliable.

Not enterprise level, but excellent for home use.

Comment The data is very weasely... (Score 2) 280

Lede says "Six crimes a day solved by CCTV, Met says" when body says "CCTV cameras across London help solve almost six crimes a day". help solve is not the same thing as solved.

Then we have "The number of suspects who were identified using the cameras went up from 1,970 in 2009 to 2,512 this year."

How many perps? Well "The Met said among the 2,512 suspects caught this year, four were suspected murderers, 23 rapists and sex attackers and five wanted gunmen.". That adds up to 32 to me... for how many CCTVs in the Metro area of London?

Comment CFLs vs LEDs (Score 1) 172

Yup, CFLs and LEDs offer about the same efficiacy (lumens/watt) although most people prefer LEDs because colour temperature is warmer (less blue in the mix). However a 155V/230V AC operating CCFL is cheap to produce - the active components are only two transistors. Cheap AC operating LED lamps use capacitive droppers and typically have short life (see FTC lawsuit: www.ftc.gov/opa/2010/09/lightsofamerica.shtm ).

What's happening here is that the solar/battery system is low voltage only (so low cost), driving LEDs through probably just a resistive dropper and providing 5V USB outputs to charge the phones.

Comment Actually, you've spotted the problem (Score 3, Interesting) 467

All the investigators need to do is run some fake but seemingly complex program that looks at the file under inspection and says "yes, stenography in use". Then the full weight of the law comes down, because now the suspect has to prove the negative - impossible of course.

So actually what is needed is a suspect's right that investigators prove any assertion that files have been hidden if that assertion/analysis is used as evidence in court.

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