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Comment: Re:Predictable failure. (Score 1) 258

by leuk_he (#48948971) Attached to: Proposed Disk Array With 99.999% Availablity For 4 Years, Sans Maintenance

You are referring to loosing a sector on the platter. That is exactly what the study assumes. loose a sector (detect that and do somtething with that ) or loose the disk.(have But there might be much more failure modes.
-power fluctuation.
-memory problems
-Software problems. (Ever seen the SAN in a big compy having problems... yup, some configuration issue)

Comment: Predictable failure. (Score 1) 258

by leuk_he (#48935503) Attached to: Proposed Disk Array With 99.999% Availablity For 4 Years, Sans Maintenance

It also assumes a normal failure of drives. However modern drives do not always fail normal. They develop slow spots, timeouts from which they might recover.

Also the software to create the redundancy might fail, of it might fail if you do not update the firmware.

And I am not even talking about catastropic failure. When a drive overheats you might want to remove it from the datacenter.

Comment: Re:Limitations (Score 1) 449

by leuk_he (#48718337) Attached to: How We'll Program 1000 Cores - and Get Linus Ranting, Again

You are not wrong, but the point is that parralel system can scale the number of cpu's ftom 4 to 1000. However the same locking mechanisms used for 4 way parralelism are not useful in 1000 way parralelism. You need different techniques then. The linus rant is pointeda current programming techniquess that scale to 4-16 cores, but start to loose a lot of efficientcy at more cores.

By the way, some synamic pipeway already exists a long time. Think about hyperthreading. 2 threads share1 core. second thread is optional to keep the cpu busy when one thread could not. Also cache might be local to one or more cores. This is also a way of dynamic pipeline.

Comment: Order it from china... 5 dollar (Score 2) 28

by leuk_he (#48589285) Attached to: Cardboard Hits Half a Million Mark, Gets an SDK

The lastest cardboard app (the 1.3) is broken for me(display drivers?), but the cardboard is for sale at 5 dollar in China (paypal recommended)

That is including cardboard,lenses,magnets, velcro and shipping.

I might not be at your doorstep before chrismas, but such a small amount is nice for 10 minutes of fun.

Comment: Re:But what do you need? (Score 1) 147

by leuk_he (#48339765) Attached to: Ask Slashdot: Choosing a Data Warehouse Server System?


Big data is a different thing from datawarehousing.

In a big data scenario you have lots of data, that you process with a highly scalable solution.

In a databasehouse you collect data from different sources and transform them in several steps to a datamodel you can create reports from it in a simple way. .

And there is the other option you just have to process lots of records from a simular source (measuring data), where you carefully monitor and tune the processing of that data.

The question does not even make a difference between this. Most of the above options are not a single person job if you want it done in a reasonable timeframe(that is before business needs catch up).

The hardware depends on the size of the data. hardware sellers are happy to sell their high-end servers with a scaleable SAN, for a price you can buy a mid class car, or even a price that is not listed.But depending on your needs a simple dell server with a good backup facility under 1000$ might suffice.

no way to tell

PS, "services" might be a way to convince you that that the solution needs to run in the cloud (to complete the buzzworld cicle) or a way to sell consultancy hours.

Comment: Re:And low-emission transport trucks, too (Score 1) 491

by leuk_he (#47869645) Attached to: To Really Cut Emissions, We Need Electric Buses, Not Just Electric Cars

All you need are wordlwide emision regulations. Better qulaity fuel or eniges better tued to emisions might make a lot of difference. There currently is economic benefit to tune a ship for better emissions. Even putting it in a harbour for 2 weeks to tune the engine (don't know if technical possible) will set the owner back a lot of money. He will not do it just for emision.

You will not need large innovations. Clean emisions is already understood, and used in power plants. YOu just need motivations.

by the way, Carbon (CO2) exhaust: some idusties, heating, and electircy generation might win more.

Comment: Re: What the heck? (Score 2) 354

by leuk_he (#47841781) Attached to: DMCA Claim Over GPL Non-Compliance Shuts Off Minecraft Plug-Ins

Almost there. Wolfse made part of the GPL code. However the Bukkit project is not gpl compliant because the entire code contains decompiled java server code. What wolfse thinks is since the project is not GPL compliant, (part is gpl, part is just working) he can put in a dcma. However his code is GPL, so he cannot withdraw that license.

Mojang is the copyright holder of the server code, he surely would be able to put in a take down request.

This is like linus putting a takedown request at redhat because their kernel is linked to non-gpl driver blobs to force nvidea to open source their drivers.

The problem is the risk: fighting this DCMA takedown requires expensive lawyer, and there is a small risk that wolfse has some reasoning that a court will agree with. In that case the costs will be so high, that the "in their free time"projects would make them bankrupt or something like that.

Comment: sponsered phones. (Score 5, Informative) 116

by leuk_he (#47815343) Attached to: E-Books On a $20 Cell Phone

These phones are sim-locked and sponsered by the provider. So the 20$ mark means not much, the real price is 10-40 dollars higher.

Using a phone for reading zaps through your battery life (1-3 hours) to light the screen.

But the discusssion stays, since for $99 you can get a reasonable e-paper reader. How to get content for this.... i leave to your imagination.

Comment: pinning gui fail. (Score 1) 220

by leuk_he (#47814871) Attached to: Firefox 32 Arrives With New HTTP Cache, Public Key Pinning Support

Yup, from secuty point: something is wrong with the pinning CA, drop a fatal error message and you are ready.

But: No option to handle the connection as a unsecured connection. If you simply want to watch the intercepted information about funny cat video, the fact that there is a man in the middle attack is not interresting.
And: Something is alarml wrong error message. Nope, just that the connection might be intercepted, or not be from the original site. Nothing wrong with the PC of the user, but nothing he can do about it. Give him options!

Comment: Re:Normal lawyer stuff (Score 2) 54

by leuk_he (#47606959) Attached to: Ross Ulbricht's Lawyer Requests Suppression Of Silk Road Evidence

No no, the gathering of the information becomes legal. Using it in a "normal" case is an entire different story.(according to the lawyer) You cannot make the gathering of everything digital that is happening for security, and then using this information in a "normal" drugs case. If he tried to do a terrorist action, then it would disappears in the drawer. However This is a normal criminal case, and in such a case the police has to follow certain procedures.

Comment: Re:Antivirus (Score 1) 122

by leuk_he (#47495893) Attached to: Critroni Crypto Ransomware Seen Using Tor for Command and Control

All trojans/bots/ransomsware is designed to circumvent antivirus. It is a arms wars between viri and anti-virus. At the moment the viri are winning it :(.

And there is a nasty side effect: real legit tor usage will be detected as malware suspect by antivirus software. So if you have a "good"reason to use tor you might have to disable anti-virus

If you think the system is working, ask someone who's waiting for a prompt.