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Making Best Use of Data Center Space: Density Vs. Isolation

khasim Mod parent up. (56 comments)

Nor are they "isolated". All of the blades connect to the same backplane.

And moving VM's between individual blades is a hassle unless you use some form of shared storage. Which makes them even less "isolated" but more redundant.

This reads more like he just wanted to show off that he calls blade servers "dense isolation".

So is it better to have a bunch of isolated servers which reduces the VM domino effect in exchange for increased hardware maintenance? Or just a few massive servers and be ready for the 4 am call to replace a CPU at any given moment?

VM is not magic. Also look into "fail over".

If you have to be called in to replace a CPU at 4 am then you have not planned correctly.

4 days ago
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Ask Slashdot: Handling Patented IP In a Job Interview?

khasim Leave them off your resume. (224 comments)

One hope is that the patents look good to the prospective employer on a resume, but I don't want them to take the existing IP for granted as part of the deal.

If it is not part of the deal then leave it off your resume.

My question is, how should I treat licensing of the patent as a topic with respect to the topic of my employment?

I think you are confusing two different situations in an interview situation.

1. You working for a company.

2. A company licensing your patents.

Leave the patents out of the process at this point.

5 days ago
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Pentagon Reportedly Hushed Up Chemical Weapons Finds In Iraq

khasim Timeline! (376 comments)

The summary also seems to have left off the critically important TIMELINE.

The "weapons" that were "found" were manufactured and abandoned in the FIRST Gulf War. Back when Bush SENIOR was the President of the USofA.

So the troops in the SECOND Gulf War (Bush Junior) were being exposed to hazardous chemicals that were 10+ years old. THAT is what is/was being covered up. Our troops were working in/around hazardous waste disposal sites WITHOUT proper equipment or training or supervision or follow-up.

There are not any "WMD" being "found" in Iraq now. It's hazardous WASTE.

ISIS (stupid name) does not have "chemical weapons" from that. They have chemical waste that is a health hazard. No GA, GB, GD, VX, or anything like that.

5 days ago
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Netflix Video Speed On FiOS Doubles After Netflix-Verizon Deal

khasim Need municipal network. (204 comments)

You cannot boycott them while they still control the last mile (the connection to your house).

In order to take that control from them, people have to be willing to vote to have their local government install/maintain/tax a local network as part of the infrastructure.

Then the local government can lease connectivity to whomever wants to offer Internet service. If Comcast is charging extra for a service you want then you can go with a different option.

about a week ago
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Password Security: Why the Horse Battery Staple Is Not Correct

khasim Mod parent up. (546 comments)

The core problem is that security has many different approaches.

A password manager is great ... as long as it is available to you on all the devices that you use to login from. Which makes it vulnerable to being cracked when one of those devices is cracked.

And that isn't even addressing things like the recent rash of credit card cracks being reported. Even if you keep YOUR password secured the attackers can still attack the system when you use the secure information.

Instead, the focus should be on the knowledge that you will, eventually, be cracked. At least partially. So be prepared to mitigate the damage done at that point.

Too many people have too much access to your information without the personal incentive to keep it secure. Or the knowledge of how to secure it. Password managers are an improvement in many scenarios. But so is writing your passwords in a book that you keep at home.

about a week ago
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Why the Trolls Will Always Win

khasim Mod parent up. (716 comments)

In a pinch, yes a troll will go after your default WASP male. I once saw a troll reduced to attacking someone for being Canadian. (!)

Or Jewish. Or gay. Or black. Or of a different political party. Or with a different opinion on a subject.

"Trolls" (they aren't trolls, they're ass-holes) will attack anyone for anything that the ass-holes do not approve of.

Anything.

The ass-holes are not attacking women because the ass-holes are misogynists. The ass-holes are attacking because that is what ass-holes do. Their attacks are phrased in misogynistic terms because the target is a woman.

about two weeks ago
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Co-Founder of PayPal Peter Thiel: Society Is Hostile To Science and Technology

khasim Re:A bit of a straw-man (238 comments)

:D

Okay, that made me laugh.

But that requires that the average person trust someone they can't even name with keeping their money safe. And the money is just a bunch of zeros and ones. If the "hackers" can take your real money can they take your imaginary money?

Will the government take your real stuff because you got imaginary money from a "terrorist"?

Will you end up in court one day because your kid is accused of sharing a song and now you owe $50,000 in penalties?

The benefits of technology are not being evenly distributed. But the risks certainly are.

about two weeks ago
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Co-Founder of PayPal Peter Thiel: Society Is Hostile To Science and Technology

khasim Re:A bit of a straw-man (238 comments)

And don't forget the scary parts.

Almost every week you read about another "hacked" company that just lost your credit card number and all your identifying information. Hope you changed all your passwords.

Will the people who "stole" your credit card ever be caught? No.

Will the people who decided NOT to protect it ever be punished? No.

Is there anything you can do? Aside from using cash everywhere? Not really.

about two weeks ago
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DoJ: Law Enforcement Can Impersonate People On Facebook

khasim And it could be worse. (191 comments)

What happens if the fake account pisses off some criminal (specifically targeted by the FBI) who then kidnaps/kills her son or niece (who are featured on that fake page)?

Someone needs to be fired over this.

about two weeks ago
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Belkin Router Owners Suffering Massive Outages

khasim Mod parent up. (191 comments)

Yeah! Who the fuck thought that was a good idea?

Sounds more like "all of the internets is broken because this one site won't work" complaint I get all the time.

It's a ROUTER. If the physical link is up then try pushing packets through it. That's all.

If you want to show connectivity to a specific site then show that in the diagnostic page on that router. But keep pushing packets.

about two weeks ago
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Why Military Personnel Make the Best IT Pros

khasim Re:They Don't (299 comments)

I spent 7 years in the army. Yes the focus is on following the manual(s) for standard tasks. And we have a LOT of manuals.

Kind of like the ISO 9000 stuff in the civilian world.

But if they are any good then they should be documenting HOW they're doing their job. And following those same procedures every time.

Part of the job is the expectation that you will be replaced. And the job will still need to be done, in the same way, by the next guy.

NOT following the manual means that the next guy will need time to come up to speed on how you did it. And the unit might not have that time.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

Look, I explained it more than once including how energy is conserved. I can't do more than I have. You have to figure out for yourself.

No. You've claimed that it will happen. That's all you've done.

The Laws of Thermodynamics say that the energy has to go somewhere.

Moving the molecules further apart in space does not reduce the energy of the molecules. Without convection/conduction the molecules can only radiate that energy to lose it.

That's physics.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

There is no energy lost from expansion of a relatively dense, higher temperature plume of gas into a vacuum.

There is energy lost if the molecules drop below the background radiation level in a few seconds. That is what you are claiming.

Where did that energy go?

The Laws of Thermodynamics say that the energy has to go somewhere.

Physics.

about two weeks ago
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The Single Vigilante Behind Facebook's 'Real Name' Crackdown

khasim Re:What an asshole (305 comments)

I'm more concerned that Facebook didn't have a process in place to monitor for OBVIOUS abuses.

1. Hundreds of complaints filed.

2. From a single account.

3. In a defined time period.

4. All the victims shared a common trait.

#1 & #2 should have been red flags over and Over and OVER and OVER. How many complaints does the average user file? Why wasn't this flagged with that person hit 2x the average? 5x? 10x? 20x? 50x? 100x?

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

Appeals to physics don't work when you are wrong as is the case here.

There is no "appeal" here. I'm showing you how the Laws of Thermodynamics show that you are wrong.

The energy has to go somewhere.

You cannot explain where the energy goes. So you just keep repeating that it goes away.

Two rocks that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

That is physics.

You don't understand what temperature is.

Not only do I understand what temperature is, I also understand how it is different than heat. And how each is measured.

Which is why I keep pointing out to you that two rocks that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

And that is what you are claiming.

1) Stealth is not perfect invisibility or undetectability.

Only on Earth. In space it is because in space there is line of sight to everything.

2) Everything is detectable with sufficient resources thrown at the problem. Even the presence of a "horizon" doesn't change that.

You are wrong. The presence of the horizon means that non-perfect stealth works on Earth. But not in space.

3) It is not actually that easy to detect things before they get close enough to cause you problems in a military sense.

The instruments available today can detect the background radiation of the universe. That is around 3 K. And it can do that at billions and billion of kilometers. Unless you are claiming FTL or reactionless drives then you are wrong.

4) Examples given of the supposed ease of detecting stealthed objects are terrible and there's a lot of ignorance of physics and routine tactics of stealth.

So your definition of "stealth" is "invisible to people who are blind". That is not stealth. That is blindness.

5) If you're going to appeal to physics as the basis of your argument, you need to get the physics right.

The Laws of Thermodynamics show that you are wrong. The energy has to go somewhere. Two rocks that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

You can claim that the exhaust will cool down to below the background radiation level of the universe within seconds but you cannot explain how that would happen.

The Laws of Thermodynamics say that the energy has to go somewhere.

Physics.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

Again learn what a strawman is. It's when you exaggerate an opponent's position in order to win an argument.

That's right. And pointing out that the Laws of Thermodynamics contradict you is not the same as exaggerating your position.

It's physics.

A shitty analogy since the surface area of the rocks doesn't change measurably by moving two meters apart.

What analogy? That is what you are claiming.

A gas plume has vastly different thermodynamic properties than a pair of rocks.

And what do you think a "gas plume" is composed of?

Two atoms that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

Two rocks that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

That's basic physics. The Laws of Thermodynamics.

about two weeks ago
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Snowflake-Shaped Networks Are Easiest To Mend

khasim Re:spider web? (38 comments)

They would be the most resilient. But they'd also be expensive.

I THINK that TFA was looking to minimize cost. Which could be why their diagram does not seem to show ANY redundant links.

In fact, I don't understand what their diagram is showing. Unless it is ancient 10base5 with vampire taps. Otherwise why are the 6 main "arms" continuing after the first connection? That doesn't look like a router diagram. Maybe it is a series of switches (or hubs) linked off of each other in a really badly designed cascaded configuration.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

And there's the straw man again.

Again, learn what a straw man is. Explaining that the Laws of Thermodynamics contradict you is not a straw man.

I guess you need to learn some physics before we continue this discussion. It's 4x the volume BTW.

Two rocks that are 1,000 K at 1 meter apart do not cool to 500 K because they move 2 meters apart.

Learn what a straw man is and learn what the Laws of Thermodynamics are.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

We aren't getting anywhere due to this bizarre, irrelevant, and incorrect insistence on your part. The Earth-side counterpart doesn't depend on horizons to employ stealth technologies.

You might want to do some research on how the STEALTH BOMBER works. Because that is exactly how it works.

Physics.

Once again, your insistence on perfect undetectability is the huge straw man that you keep using in this thread.

Again, learn what a straw man is.

In space, you have line of sight to everything. Therefore, the radiation given off by your ship is detectable.

That's the First Law of Thermodynamics.

I guess a few seconds is a bit less than a day.

You are now claiming that the exhaust will radiate all of its heat (down to 3 K) in a few seconds? In space?

I believe the correlation in velocity is linear to distance traveled, so at this point, our temperature has dropped from 3000K to 30K not including at all radiation to space.

Okay, the problem is that you are confusing DISTANCE with HEAT.

Because the exhaust is taking up 2x the volume does not mean that the exhaust is 2x cooler.

Take two rocks at 1,000 K each at a distance of 1 meter. Move them 2 meters apart. They do not become 500 K.

Again, its the First Law of Thermodynamics.

By this mechanism, it is possible to actually achieve, temporarily, lower temperatures than cosmic background, assuming you started with a dense enough monoatomic exhaust stream to resist the pressure of the Solar wind.

You don't know what the background radiation is, do you? No. See the above point with 1,000 K rocks.

Radiation being the usual third way here that heat can be transferred to a heat sink.

And you are still wrong about the heat sink. Radiation radiates away from the hot object.

The heat sink has no way to draw radiation from the object FASTER.

Physics. Specifically, the Laws of Thermodynamics.

about two weeks ago
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The Physics of Space Battles

khasim Re:There Ain't No Stealth In Space (470 comments)

You do. I don't (nor does the rest of the world). Please come up with a real argument rather than this fallacy.

Funny how you put in "the rest of the world" there. Because, as I pointed out, stealth only works the way you claim when there is an horizon to hide behind.

Once you take away the horizon, you lose stealth because your exhaust cannot be hidden.

It's the Laws of Thermodynamics.

Physics.

A planet doesn't make you undetectable.

Yes it does.

After all, I can just send a sensor around to get line of sight and now, you're detected.

And in space, everything is line of sight.

As I have pointed out again and again.

Also, your heat radiation above stops being radiated only when something intercepts it.

Which is your proposal for a shield. And I've explained why that would not work.

But a planet would. But you've just said that a planet would not.

That means there's no real limit in any direction that is black sky. Even I get that.

Then I have gotten one fact through to you.

Interception of radiation by intervening bodies is not how I propose to get stealth in space.

Yes you have. That is the shield you kept claiming would work.

That cools the gas off quickly right there. Meanwhile the increased surface area of the exhaust plume radiates heat out more efficiently.

So you are claiming that rocket exhaust will cool to background radiation levels in less than a day.

When it took the rest of the universe billions and billions of years to cool that much.

It's a near point source which is dumping heat to a 3K heat sink while there's no outer edge to the universe to dump heat.

No it is NOT!

A heat sink works by convection/conduction cooling. There is nothing in space to transfer the heat to. All the heat must be radiated away.

Again, it is physics.

https://en.wikipedia.org/wiki/Vacuum_flask

about two weeks ago

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