so, driving uphill uses the same amount of gasoline that driving downhill?
the power station does throttle down at night. they keep the generator at the same speed (3600RPM I guess, to give you 60Hz). but they don't need the same amount of fuel to keep it going. the usage on the grid acts like a brake on the generator, in the same way that the road conditions affect your bicycle.
if it's steam-based (gas, coal, nuclear), you need more steam to keep a higher pressure, to keep the generator rotating at the same speed, and that means heating more water, and more water needs more energy, and more energy needs more fuel. hydroelectric plants shut down unused turbines.
Announcer: Ladies and Gentlemen, 73-year-old candidate, Bob Dole.
Kang: Abortions for all.
[crowd boos]
Very well, no abortions for anyone.
[crowd boos]
Hmm... Abortions for some, miniature American flags for
others.
[crowd cheers and waves miniature flags] -- American politics in its simplicity, "Treehouse of Horror VII"
Well, I've been investigating a little. Yes, you can't grow an array in the sense of "adding more disks". But interestingly enough, you CAN replace the disks one by one and in the end (you will have to do a zfs export/import which is zfs for remounting), the array will grow to use all the new available space. It's not completely online (as you have to export/import and you will lose access for a few seconds) but the important thing is that it works.
sure. my home server has 4 500GB drives and 4 extra sata ports. Either way, I'll able to grow my pools: more raidzs to a zpool, OR, when I fill up the 1.3TB (currently I'm under 40% after 6 months), maybe a new version of ZFS will be out there and will have that feature.
"until" being the keyword here. and considering that ZFS is being developed not only by "the community", but also by sun's own people, it's not going to take too long until that feature is added.
then you need to mkfs, and if you run out of space you're screwed because you can't easily grow. also, you can't create a newer fs, nor you can have snapshots, send/receive snapshots, volumes, have on-the-fly checksumming and disks that don't drop off the array at the first read error, one-line CIFS/NFS/iSCSI sharing. Get over it... zfs is better than md+lvm+ext3+whatever.
I'm not trolling, it's just that ZFS has been developed without the traditional and orthodox methods of disk-partition-filesystem and put everything on a single "layer", and instead of losing flexibility, we gain more, just because zfs developers were thinking outside the box (the now "traditional" way of doing things is segregation: the OSI layers, etc, claim to be more flexible, efficient and manageable than throwing everything together). I know, I know, veritas had this for years, so we could say that it was stole^H^H^H^H^Hcopied from them -- just as gates copied jobs, and jobs copied xerox.
Imagine the possibilities of breaking traditionalisms (like linux does "socially" but not "technologically").
same here. when I was taking the CCNA classes, I talked to everyone. they were a bunch of noobs really, so everyone was surprised when I talked about my adventures with Linux and networking. Couple of months later, I was setting up a rural WISP and sold support to them for 2 years. Now I support 2 more WISPs and I get enough money, not enough to live of course, but more than enough to buy gadgets and such. If I needed the money, I'm sure I could get more with a little creativity.
Where I live it's often 42C and my server stays in a storage room (under a tin roof, with foam insulation that doesn't seem to do anything). It has an athlon64 and 4 500GB drives (ZFS array). The only time it shut down was when the chipset fan failed and the BIOS detected the overheating and shut down the machine. Sure, the case has 120mm fans and all but they're just pumping warm air.
The OP is stupid and obviously has never been inside a data center. They're much warmer than your average house. Indeed, they're so warm it makes you think the air conditioning is off. But the internet doesn't fry because of the heat. CPUs run nicely even at 60C. Hell, silicon devices are usually rated for 125C, and well-designed equipment uses at least 45C ambient temperature for calculations, and not the usual 25C. And by the way, my Athlon64 x2 with powernow (or whatever it's called) turned on stays at room temperature (!) when idle and no more than 10-15C higher when under load.
he meant to say that, "in crude terms", or "in layman's terms", the CAN Bus was a "simplified ethernet". If you still don't get it, you may want to check on Thinnet, which is in fact a bus and it uses terminators in each side (like CAN). But it's a little more complicated due to the fact that it requires special cables, and the protocol is designed for a fixed, and relatively high speed. Also, ethernet allows for larger frames (1500 bytes of payload)... etc.
ok -- here's the deal: I want a mac. But i've been looking around, asking around, everything. And every time is the same thing: the apple is much more expensive than anything else. So I know what I'm talking about. But don't take my word for it, you can check for yourself:
For apple prices: www.macstation.com.ar For the rest: www.fravega.com.ar www.garbarino.com.ar
Oh and second hand is not an option. The fanboys are convinced that the mac "never loses its value" and because of that they expect you to pay almost the original retail price for stuff. Man, it was crazy in the local ebay when the intel macs came out: the fanboys wanted to sell their old G4s and G5s for more than the new one, claiming the G4 was "superior" and faster and all that crap they love to say.
One thing I want to make clear: I'm not against apple. Their products are well designed, and they take the "design" part of it to every aspect of the machine (why don't my apple wireless keyboard keys get dirty?), and not just the "looks" of the machine. For example, the magnetic power connector thing. My mom has a vaio with a regular barrel connector and it sucks.
What I don't like is the fanboys, people who don't know shit but they repeat what they hear (OMG my RISC mac is sooooo much faster than your wintel! yeah? well now you're on a intel machine, and it's faster than your old RISC). Also, you can tell them apart from the rest of the users because they keep repeating the "good" things of their products and never say anything bad about apple.
...and the most expensive HP system includes a huge screen, full keyboard with numeric keypad,... I don't know why I bother answering to that part. Let's go to the bottom then: the cheapest macbook $5500 (USD 1800). A similarly-featured Vaio, $4000 (USD 1270). Happy now?
dude you're disgusting. you're so full of shit, I can't believe it. you're beyond the classical fanboy. you have answered to every comment the slightest negative thing about apple, and you keep telling us that the mac is cheaper (for fuck's sake! it's not! I have checked, and in my country the most expensive HP system is $8000 (USD 2600) and the most expensive mac is $17000 (USD 5500!!) www.macstation.com.ar and also. but hey, don't try to answer to the, I know you'll find some justification: the mac is better, is faster, no one gives a shit about my country, whatever.
also, you keep calling windows "unstable". yes, unstable if you're on a crappy system with little ram (oh yes, of course -- i'll save you the typing: you had a big-ass system and still it wasn't stable at the time you used it). also unstable if you run a gazillion shareware and spyware programs (yes, yes, os x doesn't allow spyware blablablahfuck you, just wait until it's "big enough" to be of interest to hackers/crackers/netbot admins...whatever).
now... tell me something bad about apple. something you don't like. something that sucks about apple and you miss from windows or linux or even DOS. come on. there's gotta be something, because if you expect me to believe that you love everything from apple then you're a fucking lost cause, and you're not serious (you claim to do web design on a laptop. what the fuck is wrong with you? get a fucking 24" imac at least -- i'm sure apple has something you can use to seamlessly keep everything in sync if you need your design files while on the road)
Yes, and you can't add more devices to a raidz, that's something I'd like. But you can keep adding devices (single or raid) to a zpool and make it grow more and more. I have 4x500GB, and when I run out of space I'll add 4x1TB (if my calculations are correct, then I'll fill up my 4x500GB or 1.3TB by the time TB drives are cheap enough). The older drives could be used for backing up sensitive data from the array (not everything is worth backing up). And with ZFS's incremental "send", they will come very handy (sadly, tape backup is far too expensive for me...)
*When* ZFS allows to remove storage from a zpool, I'll be able to remove the old 4x500GB and replace them by something larger (4x2TB?) and keep repeating (whenever the usage reaches 2/3 of the capacity, remove the smaller set of disks and replace by 2x the capacity of the larger disks).
Now... if zpool would ever allow to replace disks one by one, I'll be able to fill up the whole array and change the disks one by one. When all disks are replaced, zpool should detect that the maximum capacity of all disks is larger than before, and automagically expanding itself to use all available spacing. But I doubt they would ever implement that. Not for technical reasons but because, who would want to do that besides the Geeky home user?
yeah, that's the problem. If I go and talk to them, they would know "it was me", whatever happens to their dog. If another neighbor kills the dog, the owner will think it was me, and probably sue me or something. I searched Google for something on that, and it said it was a good idea to send them an anonymous letter. So I talked to my mother about that and she told me "well, probably they won't do anything. And don't even think of writing that letter on your computer, because they will know it was you" (that's what you get from being nice and fixing your neighbors' computers). Guess I'll just have to dig out the old typewriter from the junk pile in the attic.
Make the dog bark more. Seriously. Get a powerful ultrasonic whistle (electronic) and either play it loudly 24/7, or joyfully engage it automatically at 3 AM daily, and especially weekends, until the dog problem resolves itself...
Problem is, the dog already starts barking automatically at 3AM daily, and especially weekends. And the problem hasn't solved yet:(
Actually it's a regular window air conditioner, I set it on recirculate and it doesn't bring air from outside.
I don't have heating either (just a space heater for when it gets too cold). Where I live it usually doesn't go below 0C in winter... 10C is "really cold". We're in summer now, and temperature is 33C, which is "nice", because 40C is not uncommon.
same here. My neighbor has this stupid dog that barks 24/7, so I got used to have my air conditioner on all night (yes, even in winter in fan-only mode, damn that thing just stirrs the air and it gets so fucking cold). Now I like the sound of silence if I want to just relax... but I just can't sleep with my air conditioner making the soft wind noise:(
I'm from Argentina and it's the same thing here. The Jetta (called Bora here, probably because it sounds too much like "yeta", which means "bad luck" here) is cheaper than the Camry, but there's the Vento and the Passat for that price. But BMWs are not that far, a Series 1 BMW (which I don't like) will cost a little more than the Passat... But a Series 3 costs much more, but it's not impossible to buy either.
Don't be ridiculous. Every time you recode a movie, it loses quality. You simply don't. You keep your file and name it something Example.Movie.2008.DVDRip-XviD.AC3.PROPER.SHiTmOVIeS-SC3NE.avi There. Bulletproof system. If you're in doubt, just add a nice NFO file along.
why? I mean, why can't this be done with a microcontroller and a DSP?. Or a "DSC" (Digital Signal Controller) such as Microchip's DSPic (DSPs with an embedded microcontroller -- or vice versa). They have a lot of pins, a lot of processing power... they even have USB and all. Why do we need to run Linux everywhere? Have we lost the point of using an Operating System?
Quote from Wikipedia:
An operating system (OS) is the software that manages the sharing of the resources of a computer and provides programmers with an interface used to access those resources.
Actually the guy knew his stuff. In one of the breaks we had a nice chat about electric standards, NEMA vs. IEC, etc. But I think he was caught by surprise and didn't prepare his class. Also, the class was directed to Engineering students at my university so no potential buyers there:P
Slashdot Mirror
so, driving uphill uses the same amount of gasoline that driving downhill?
the power station does throttle down at night. they keep the generator at the same speed (3600RPM I guess, to give you 60Hz). but they don't need the same amount of fuel to keep it going. the usage on the grid acts like a brake on the generator, in the same way that the road conditions affect your bicycle.
if it's steam-based (gas, coal, nuclear), you need more steam to keep a higher pressure, to keep the generator rotating at the same speed, and that means heating more water, and more water needs more energy, and more energy needs more fuel. hydroelectric plants shut down unused turbines.
Obligatory Simpsons Quote
Bob Dole gives an electoral speech:
Announcer: Ladies and Gentlemen, 73-year-old candidate, Bob Dole.
Kang: Abortions for all.
[crowd boos]
Very well, no abortions for anyone.
[crowd boos]
Hmm... Abortions for some, miniature American flags for
others.
[crowd cheers and waves miniature flags]
-- American politics in its simplicity, "Treehouse of Horror VII"
Well, I've been investigating a little. Yes, you can't grow an array in the sense of "adding more disks". But interestingly enough, you CAN replace the disks one by one and in the end (you will have to do a zfs export/import which is zfs for remounting), the array will grow to use all the new available space. It's not completely online (as you have to export/import and you will lose access for a few seconds) but the important thing is that it works.
Here's a link I found after I tried it http://blogs.sun.com/mmusante/entry/zfs_and_automatically_growing_pools
sure. my home server has 4 500GB drives and 4 extra sata ports. Either way, I'll able to grow my pools: more raidzs to a zpool, OR, when I fill up the 1.3TB (currently I'm under 40% after 6 months), maybe a new version of ZFS will be out there and will have that feature.
"until" being the keyword here. and considering that ZFS is being developed not only by "the community", but also by sun's own people, it's not going to take too long until that feature is added.
then you need to mkfs, and if you run out of space you're screwed because you can't easily grow. also, you can't create a newer fs, nor you can have snapshots, send/receive snapshots, volumes, have on-the-fly checksumming and disks that don't drop off the array at the first read error, one-line CIFS/NFS/iSCSI sharing. Get over it... zfs is better than md+lvm+ext3+whatever.
I'm not trolling, it's just that ZFS has been developed without the traditional and orthodox methods of disk-partition-filesystem and put everything on a single "layer", and instead of losing flexibility, we gain more, just because zfs developers were thinking outside the box (the now "traditional" way of doing things is segregation: the OSI layers, etc, claim to be more flexible, efficient and manageable than throwing everything together). I know, I know, veritas had this for years, so we could say that it was stole^H^H^H^H^Hcopied from them -- just as gates copied jobs, and jobs copied xerox.
Imagine the possibilities of breaking traditionalisms (like linux does "socially" but not "technologically").
same here. when I was taking the CCNA classes, I talked to everyone. they were a bunch of noobs really, so everyone was surprised when I talked about my adventures with Linux and networking. Couple of months later, I was setting up a rural WISP and sold support to them for 2 years. Now I support 2 more WISPs and I get enough money, not enough to live of course, but more than enough to buy gadgets and such. If I needed the money, I'm sure I could get more with a little creativity.
Where I live it's often 42C and my server stays in a storage room (under a tin roof, with foam insulation that doesn't seem to do anything). It has an athlon64 and 4 500GB drives (ZFS array). The only time it shut down was when the chipset fan failed and the BIOS detected the overheating and shut down the machine. Sure, the case has 120mm fans and all but they're just pumping warm air.
The OP is stupid and obviously has never been inside a data center. They're much warmer than your average house. Indeed, they're so warm it makes you think the air conditioning is off. But the internet doesn't fry because of the heat. CPUs run nicely even at 60C. Hell, silicon devices are usually rated for 125C, and well-designed equipment uses at least 45C ambient temperature for calculations, and not the usual 25C. And by the way, my Athlon64 x2 with powernow (or whatever it's called) turned on stays at room temperature (!) when idle and no more than 10-15C higher when under load.
he meant to say that, "in crude terms", or "in layman's terms", the CAN Bus was a "simplified ethernet". If you still don't get it, you may want to check on Thinnet, which is in fact a bus and it uses terminators in each side (like CAN). But it's a little more complicated due to the fact that it requires special cables, and the protocol is designed for a fixed, and relatively high speed. Also, ethernet allows for larger frames (1500 bytes of payload)... etc.
ok -- here's the deal: I want a mac. But i've been looking around, asking around, everything. And every time is the same thing: the apple is much more expensive than anything else. So I know what I'm talking about. But don't take my word for it, you can check for yourself:
For apple prices: www.macstation.com.ar
For the rest: www.fravega.com.ar www.garbarino.com.ar
Oh and second hand is not an option. The fanboys are convinced that the mac "never loses its value" and because of that they expect you to pay almost the original retail price for stuff. Man, it was crazy in the local ebay when the intel macs came out: the fanboys wanted to sell their old G4s and G5s for more than the new one, claiming the G4 was "superior" and faster and all that crap they love to say.
One thing I want to make clear: I'm not against apple. Their products are well designed, and they take the "design" part of it to every aspect of the machine (why don't my apple wireless keyboard keys get dirty?), and not just the "looks" of the machine. For example, the magnetic power connector thing. My mom has a vaio with a regular barrel connector and it sucks.
What I don't like is the fanboys, people who don't know shit but they repeat what they hear (OMG my RISC mac is sooooo much faster than your wintel! yeah? well now you're on a intel machine, and it's faster than your old RISC). Also, you can tell them apart from the rest of the users because they keep repeating the "good" things of their products and never say anything bad about apple.
...and the most expensive HP system includes a huge screen, full keyboard with numeric keypad, ... I don't know why I bother answering to that part. Let's go to the bottom then: the cheapest macbook $5500 (USD 1800). A similarly-featured Vaio, $4000 (USD 1270). Happy now?
you're an asshole. you know what he meant. don't play smart, you aren't.
dude you're disgusting. you're so full of shit, I can't believe it. you're beyond the classical fanboy. you have answered to every comment the slightest negative thing about apple, and you keep telling us that the mac is cheaper (for fuck's sake! it's not! I have checked, and in my country the most expensive HP system is $8000 (USD 2600) and the most expensive mac is $17000 (USD 5500!!) www.macstation.com.ar and also. but hey, don't try to answer to the, I know you'll find some justification: the mac is better, is faster, no one gives a shit about my country, whatever.
also, you keep calling windows "unstable". yes, unstable if you're on a crappy system with little ram (oh yes, of course -- i'll save you the typing: you had a big-ass system and still it wasn't stable at the time you used it). also unstable if you run a gazillion shareware and spyware programs (yes, yes, os x doesn't allow spyware blablablahfuck you, just wait until it's "big enough" to be of interest to hackers/crackers/netbot admins...whatever).
now... tell me something bad about apple. something you don't like. something that sucks about apple and you miss from windows or linux or even DOS. come on. there's gotta be something, because if you expect me to believe that you love everything from apple then you're a fucking lost cause, and you're not serious (you claim to do web design on a laptop. what the fuck is wrong with you? get a fucking 24" imac at least -- i'm sure apple has something you can use to seamlessly keep everything in sync if you need your design files while on the road)
Yes, and you can't add more devices to a raidz, that's something I'd like. But you can keep adding devices (single or raid) to a zpool and make it grow more and more. I have 4x500GB, and when I run out of space I'll add 4x1TB (if my calculations are correct, then I'll fill up my 4x500GB or 1.3TB by the time TB drives are cheap enough). The older drives could be used for backing up sensitive data from the array (not everything is worth backing up). And with ZFS's incremental "send", they will come very handy (sadly, tape backup is far too expensive for me...)
*When* ZFS allows to remove storage from a zpool, I'll be able to remove the old 4x500GB and replace them by something larger (4x2TB?) and keep repeating (whenever the usage reaches 2/3 of the capacity, remove the smaller set of disks and replace by 2x the capacity of the larger disks).
Now... if zpool would ever allow to replace disks one by one, I'll be able to fill up the whole array and change the disks one by one. When all disks are replaced, zpool should detect that the maximum capacity of all disks is larger than before, and automagically expanding itself to use all available spacing. But I doubt they would ever implement that. Not for technical reasons but because, who would want to do that besides the Geeky home user?
you would have to be really stupid to use tap water on a system like that. add some antifreeze and that's it.
zfs.
yeah, that's the problem. If I go and talk to them, they would know "it was me", whatever happens to their dog. If another neighbor kills the dog, the owner will think it was me, and probably sue me or something. I searched Google for something on that, and it said it was a good idea to send them an anonymous letter. So I talked to my mother about that and she told me "well, probably they won't do anything. And don't even think of writing that letter on your computer, because they will know it was you" (that's what you get from being nice and fixing your neighbors' computers). Guess I'll just have to dig out the old typewriter from the junk pile in the attic.
Actually it's a regular window air conditioner, I set it on recirculate and it doesn't bring air from outside.
I don't have heating either (just a space heater for when it gets too cold). Where I live it usually doesn't go below 0C in winter... 10C is "really cold". We're in summer now, and temperature is 33C, which is "nice", because 40C is not uncommon.
I was thinking about just kill the stupid dog but I can't -- the house is too far away and there are too many trees :P
And going the legal way, at least in my country, means I have to sue my neighbor. And I don't want problems with people...
same here. My neighbor has this stupid dog that barks 24/7, so I got used to have my air conditioner on all night (yes, even in winter in fan-only mode, damn that thing just stirrs the air and it gets so fucking cold). Now I like the sound of silence if I want to just relax... but I just can't sleep with my air conditioner making the soft wind noise :(
I'm from Argentina and it's the same thing here. The Jetta (called Bora here, probably because it sounds too much like "yeta", which means "bad luck" here) is cheaper than the Camry, but there's the Vento and the Passat for that price. But BMWs are not that far, a Series 1 BMW (which I don't like) will cost a little more than the Passat... But a Series 3 costs much more, but it's not impossible to buy either.
Don't be ridiculous. Every time you recode a movie, it loses quality. You simply don't. You keep your file and name it something Example.Movie.2008.DVDRip-XviD.AC3.PROPER.SHiTmOVIeS-SC3NE.avi There. Bulletproof system. If you're in doubt, just add a nice NFO file along.
Quote from Wikipedia:
Actually the guy knew his stuff. In one of the breaks we had a nice chat about electric standards, NEMA vs. IEC, etc. But I think he was caught by surprise and didn't prepare his class. Also, the class was directed to Engineering students at my university so no potential buyers there :P