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Comment Re:Why not both? (Score 2) 236 236

AC has far lower transmission losses over long distances, however with the advent of rooftop solar now people can generate DC closer to where they're using it.
Converting AC to DC and DC to AC will always incur losses, and as AC is far more efficient for transmission, we've historically used AC everywhere (well, except inside just about everything you plug into an electrical outlet, where DC is generally used)

Comment Re:Pre-cambrian computing (Score 1) 191 191

I'll have to watch that docco - After using BBC micros and BBC Model B in primary school, and the Acorn Archimedes in high school, I've followed Arm with a bit of interest. Their rise and fall and then stratospheric rise again from the ashes is an incredible story. By sheer volume, there are probably more ARM cores on the planet than any other architecture - ARM was originally the Acorn RISC Machine and was an incredible processor architecture in it's day (and, through licensing to other fabs, still is pretty impressive for it's performance per watt)

Comment Two ways... (Score 1) 173 173

There are two ways of doing this.

One is to look for alternative remote desktop software that does work. I've had success with TeamViewer - YMMV.

Two is to put in a lan-to-lan VPN at each site and configure your routing appropriately - either go with something like DD-WRT or get something that will do it out of the box like a Ubiquity EdgeRouter Lite ($100 and it has 3x gigabit ports and enough horsepower to route at an appreciable fraction of that rate)

Comment But how many people actually check... (Score 1) 296 296

The question is not whether certs are worth the time and money (I tend to believe that they're not) but if you're putting them on your resume, who is actually going to check...

Another answer for are they worth the time and money - most definitely for the certification centres.

Comment Re:Still don't trust SSDs (Score 5, Insightful) 144 144

Yep. I'll happily take 10x the number of IOPS and limited writes (that are in most cases many years of regular service) over "infinite" writes and moving parts. I wouldn't want to keep spinning rust in service more than 3-5 years tops, and if all the SSDs I've used will survive this long, why should I use the slower solution?

Comment Re:How is this better than iptables or pf? (Score 1) 34 34

Because someone has already done the hard work for you.
Time to do what you want to do = 2-4 hours or more.
Time to dump an image to a CF card and boot it - 2 minutes.
Plus, if it's based on m0n0, it'll run out of the box on embedded systems like Alix and Soekris boxes, which are amazingly reliable embedded x86 systems with no moving parts. I've got Alix-based m0n0 firewalls out there that haven't been rebooted in years and they just keep going. It's also designed to run from flash media, so writes (for logs etc) are kept to a minimum.

Comment Re:It's not a networking issue. (Score 1) 384 384

If I understand what you're saying, each destination IP is behind a NAT, and so from the point of view of the laptop, there are, say, 16 IP addresses that are all NATted to the individual pumps, that all happen to have the same IP on the other side of the NAT.

The question for the submitter then, is seeing that every pump has the same IP, is this IP hard-coded into the software, or can you specify the IP that you push the firmware update to?

If the software is hard-coded to assume every pump it connects to has the same IP, then you're in trouble.

Comment Re:Ownership and Appreciation (Score 1) 142 142

As nice as communism sounds, there's an inherent problem with rentals.

Anyone who's been a landlord knows that people don't take care stuff they don't own. Rental cars are abused, apartments are damaged and left uncleaned, taxis are smelly, public toilets are filthy and broken down.

I don't know where you live, but here that's not the case. The last rental car I had was clean, 100% undamaged and had a full tank of fuel. They inspect rental cars quite thoroughly when you hand them back and you pay for any damage that wasn't noted when you picked up the vehicle, whether you caused it or not.
The last rental property I lived in was also clean and tidy. I had to pay a huge amount of money for bond and once again, unless the property was in a good state when I moved out, they would have been able to keep some or all of the bond to make it good. Public toilets, well I wouldn't exactly eat off the floor or anything like that, but they're bearable...

The last person that quit or was fired will be held responsible for everything that goes wrong -- until the next person quits or is fired.