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Comment Re:Natural gas backup generator (Score 1) 695

Woah buddy; important point -- don't forget to de-rate your generator!

If you actually use even close to 80% of your 100A service, that 17kw Kohler running on natural gas is going to fry.

Most gas generators can be fueled with either LP or NG, but when you burn NG, your efficiency is diminished. In addition, utility companies like to keep the BTU content of their gas close to the minimum they are legally allowed, so it's good even to overestimate. Rule of thumb on this is around 15% total below the advertised rating or 5-10% lower than the official NG rating of the generator. For that 17kW Kholer that puts you at around 14kW that you can realistically produce out of that genset at peak.

Also keep in mind that for a number of other reasons, you're not going to be able to get peak power out of that generator for a while after it starts up, and most "standby" generators are not rated for peak power during continuous duty. There is also power factor to consider, as well as some other minor unfavorable types of things that the marketing numbers don't really include, so you really need to de-rate about 10% more to figure the nominal size load you can protect.

SO just being conservative on that Kholer (which you need to be when you are considering an EMERGENCY generator), you could reasonably ask it for 55A or so. That might be sufficient for a whole home without major electric appliances, but it's not going to deal with electric heaters, ovens, clothes dryers, etc. all that well. You'd need either a larger genset or to do some selective circuit protection using a sub-panel.

Comment Title misleading (Score 3, Insightful) 374

The title of this post is rather misleading. It implies VirtualBox can run a virtualized 64 bit machine on a 32 bit processor and VMWare cannot. Neither of these are true. It can now host a 64 bit guest VM when the host OS is 32 bits.

Support for 64 bit VM's under 32 bit host OS's has been standard in VMWare's entire line ever since they included 64 bit guest support. Even the service console through ESX 3.5 is a 32 bit VM (Though it's not really fair to call it the "Host" OS)

AFAIK, virtualizing 64 bit guests does still require Intel VT or AMD Pacifica support on the CPU regardless on all products that support 64 bit guests.

Comment Re:Tier 1 is about long-haul. (Score 1) 174

The other thing to consider is that these "Tier 1" companies who are also "Last Mile" access providers are huge businesses. It is irresponsible for the "Last Mile" division to rely solely on the "Tier 1" division for access for its customers. Sprint (the ISP that connects customer cellphones to the net) should have an alternative to routing through Sprint (the backbone provider).

I'm not sure whether or not to blame Sprint & Cogent (collectively) or their customers (collectively) for any trouble caused on Oct. 30. They were all getting exactly what they paid (or did not pay) for.

Comment Re:But which of them broke the Internet? (Score 1) 174

Well OK so others have cleared this up for you -- transit free etc.

So we have these big networks all feeling high and mighty because they are so freaking insistent on remaining transit free; it's ridiculous.

Here's the question that customers should be asking their providers instead of just complaining when things go wrong: If I am paying you for Internet access, how will you handle this type of contingency? If Sprint & Cogent were receiving money from customers for Internet connectivity, Sprint & Cogent should have had paid transit available for their customers. They can blame each other all day long for all anyone cares, but in the end the customer loses. To be basically transit free you have to peer with something like 11 networks or some such these days. When you tell your customers there isn't an alternative and start blaming some other company, you are flat out lying.

Problem is nobody knows to ask so there's no incentive to do it.

Comment I am worried about your project. (Score 1) 215

Anyone who has taken even a passing glance at Iridium data knows it's 2400bps with stream compression -- it really bothers me that you have apparently looked into using it and don't know this basic spec.

But, on to the problem: You need to manage some gear remotely and the lowest common denominator is 2400 bps. I really don't understand why you can't use a serial device server and forward/reverse telnet to do anything you really need. Windows 2008 "foundation" or "core" or whatever they call it really has made it possible (though horribly un-fun) to manage windows from a command line.

If you absolutely require remote GUI, your best bet will be ICA as it supports direct serial and can run at a functional level at 9600 baud and probably pass in a pinch at 2400. I am not sure if Citrix's PortICA (The version that runs on XP etc.) can be made to support serial connections, but it's worth asking them about. RDP will be quite a bit thicker and requires IP connectivity to work.

Security

Submission + - Student charged for bringing tool into high school 8

sm62704 (mcgrew) writes: "The Chicago Tribune (bugmenot required) and Belleville News Democrat are reporting on the plight of Christopher Berger, an honor student at Grayslake Central High School, a choir singer, as well as a former football player who spends half the day training to be a firefighter.

He was arrested for "reckless conduct" for bringing a tool to school; a Totes outdoor multi-tool flashlight, which has (gasp) a two inch blade.

What would they do to a kid who brought a balloon full of hydrogen to school, like I did when I was in the 7th grade? I'm sure glad I'm a geezer!"
Communications

Skype Blames Microsoft Patch Tuesday for Outage 286

brajesh writes to tell us that Skype has blamed its outage over the last week on Microsoft's Patch Tuesday. Apparently the huge numbers of computers rebooting (and the resulting flood of login requests) revealed a problem with the network allocation algorithm resulting in a couple days of downtime. Skype further stressed that there was no malicious activity and user security was never in any danger.
Education

Sunken Treasure Worth $500 Million Found Off England 157

An anonymous reader writes "In a modern day (and underwater) version of Indiana Jones, the AP is reporting that Odyssey Marine Exploration has recovered an estimated $500 Million in colonial coins from a 400 year old shipwreck in the Atlantic. The exact location of the wreck is still undisclosed. Odyssey is a for-profit, publicly traded company. 'In seeking exclusive rights to that site, an Odyssey attorney told a federal judge last fall that the company likely had found the remains of a 17th-century merchant vessel that sank with valuable cargo aboard, about 40 miles off the southwestern tip of England. A judge granted those rights Wednesday. In keeping with the secretive nature of the project dubbed ''Black Swan,'' Odyssey also is not discussing details of the coins, such as their type, denomination or country of origin. Bruyer said he observed a wide variety of coins that probably were never circulated. He said the currency was in much better condition than artifacts yielded by most shipwrecks of a similar age. The coins -- mostly silver pieces -- could fetch several hundred to several thousand dollars each, with some possibly commanding much more, he said.'"
Caldera

Submission + - SCO says IBM hurt profits

AlanS2002 writes: "In its ongoing litigation against International Business Machines Corp., the SCO Group Inc. on Monday said IBM hurt SCO's relationship with several high-tech powerhouses, causing SCO's market share and revenues to plummet. In a hearing before U.S. District Judge Dale Kimball, an attorney for Lindon-based SCO said IBM "pressured" companies to cut off their relationships with SCO. And "the effect on SCO was devastating and it was immediate," Mark James said. IBM on Monday argued for summary judgment on the matters of unfair competition and business interference, but SCO contends that a jury trial is needed."
Biotech

Submission + - New Drugs Enhance Performance, Eliminate Sleep

docinthemachine writes: "New drugs in the eugeroic family are completing trials that offer improved memory, mood enhancement, improved alertness and cognitive powers without any of the nasty side effects and mass murder of speed and crank. They are a class of novel stimulants that produce long-lasting mental arousal. They are unique in producing hypervigilence and alertness without peripheral effects or addidition of usual stimulants. Strangely, they have minimal effect on sleep structure, and do not cause rebound hypersomnolence (crashing). Related are Ampakines that also cause memory enhancement (just a bit of abuse potential there). One of these — a drug code-named CX717 enabled sleep deprived rhesus monkeys to outperform rested normal monkeys on memory tasks. you can read details of the drugs and studies at http://docinthemachine.com/2007/03/09/eugeroic/"
Role Playing (Games)

WoW Not-So-Live Maintenance 58

scdeimos writes "WoW servers are currently displaying the following Welcome message:
Breaking News
All realms will be offline for scheduled maintenance.
* Date: January 2nd 2007
* Time: 5:00am — 11:00am PST

For more information, please check our realm status page.
Thank you,
Blizzard Entertainment.
So much for Blizzard implementing Live Maintenance in WoW to bring an end to Patch Tuesdays! The WoW Realm Status forums page has nothing further to add at this time."

EarthBound Fans Take Matters Into Their Own Hands 59

Reid Young writes "EarthBound fans have waited 11 years for Nintendo to release the game's sequel, Mother 3, which came out in Japan in April 2006. However, following a recent announcement by a Nintendo employee that it almost certainly won't happen, the fans are taking it upon themselves to get the job done by organizing a fan translation with some of the finest names in ROM hacking. Is it ethical? Does Nintendo even care?"

Which Asterisk Or Other VoIP System To Deploy? 91

ubercombatwombat is looking for a bit of advice: "On the 9th of November, I have a meeting to discuss an Asterisk based phone system for a new elementary school. I am the network admin for the district. Currently, we are migrating from a T-1 based Nortel (option 61, 2 x option 11 and 7 x Norstar 8x32's, for those who care) to 1GB data fiber and a 2nd pair per site — to allow simple copper-to-fiber for the split T-1/Norstar's. We also just got a 10MB (scalable to 100MB) connect to the Internet. I can keep the VoIP basically on a separate network if need be as well. What do I install? Are there Asterisk vendors that are available and have enough experience?"

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