I don't want to give too many details, but at least one storage company has encountered 1% to 2% drive failure rate from spindle motor burnout *alone* on the Seagate 750GB drives. This is not counting bit rot.
There's at least one video of a guy doing just this, running XP on top of VirtualBox on top of Ubuntu. It's annoying and disgusting, but hey, at least this gives me a use for that XP license that's been lying dormant since my switch to Kubuntu:)
mdadm software raid 5 on cheap COTS hardware
on
Best Home Network NAS
·
· Score: 1, Interesting
I did it, and you can too! For my setup you need five things:
1) Second-hand hardware - I just got an AMD 3800+, SLI mobo, and 1GB of RAM for $125 on CL. 2) A _good_ PSU - I recommend the Antec EarthWatts 430 for its quiet running and 80%+ efficiency - $60 3) A dirt-cheap case - Frys has a dozen workable cases for $50 or less. 4) 3+ drives at the lowest $/GB price point you can find - 3 250GB drives at Frys for $180 a year ago 5) A simple, easy-to-use Linux distro like Ubuntu, Kubuntu, Mandriva, etc. - Free!
Total: $415 ($500 gets you a dedicated drive controller and a separate boot drive of 80-120GB as well)
You can go el cheapo on the mobo, CPU, and RAM because pure performance is not your main concern. The PSU has *got* to be good quality, however. If possible, use a separate fourth drive as the machine's boot and swap partition so that a failure of a RAID drive doesn't jeopardize the host machine's operation, and vice-versa.
I started my RAID server with a P3-900, 512MB of RAM, 3 250GB IDE drives and a two-port IDE drive controller to complement the mobo's, a 40GB IDE drive I got free from work as the / and swap drive, a $40 aluminum case, and the Antec PSU. All told I think my outlay was around $370 because while I got the CPU, Mobo, and RAM for free (in exchange for volunteering at interconnection.org, check them out) the PSU was more expensive then.
Setup is fairly straightforward, although not intuitive: you have to install Linux, prepare your RAID drives for mdadm, format them, create the RAID array, and then mount it. Finally you have to create your NFS or Samba shares and create users and set permissions for the raid. Actually, setting up Samba might be the single most annoying part of the whole process! Luckily tutorials for all of these steps exist on the 'Net.
The reason I emphasize the non-RAID boot drive is ease of maintenance: my little 40GB drive bit the dust a couple weeks ago and I was able to swap it out, install a new version of Kubuntu, and reassemble my RAID just a few minutes later. If I'd thought about it, I could have been backing up my original server configs *to* the RAID for just such an eventuality, which would have made restoring the system even more trivial. Essentially, if you separate the components of the server itself as much as possible from the
If you have the time and are willing to put in some effort, I believe this will yield a more flexible and cost-effective solution than most commercial SOHO NAS solutions: I was able to use this machine as a RAID server, a web server for an experimental flash video hosting site, a backup workstation for working from home and for school projects, and as a quiet bittorrent client. The only caveat is that the less powerful your CPU is, the longer automated RAID checks will take, but you can schedule those for early in the morning and usually never notice the CPU being used. Software RAIDS are usually as performant as hardware versions for non-enterprise needs, and being able to swap the drives into better hardware without needing a proprietary drive controller is a godsend.
As I understand it, all the recent security ramp-ups have been at the express "request" of the US government, just like Japan's reluctant support of the war in Iraq. If you have a complaint, best take it to your representatives here in the US (or wherever you might be).
Sunshine, while visually sumptuous, is about the stupidest "space" movie in recent memory. Anything I saw happen in this "movie" could automatically be assumed to be the opposite of real life and common sense - I swear to god, this movie was so bad it gave me a stroke *and* the gout - so obviously you would A) not freeze instantly, and B) not be doing what those morons on the Icarus II were doing in the *first* place.
When I was in the Army Armor Corps., we were told that while turning a.50 caliber M2 machine gun on enemy troops would be a violation of the Geneva Conventions, shooting equipment that just happened to be carried by a troop was acceptable, even if it resulted in the death of the troop. Of course, to the troop involved it would probably make little difference if they were shot to death with an anti-personnel-rated 7.62 coax, the TC's.50 cal, or an unusually accurate HEAT round.
At least some of their storage is from Isilon Systems, Inc: 34TB could be as few as three nodes, or as many as 40, depending on what model they're using and whether they have any accelerator nodes.
I would say that the reason people don't want him talking about OSS, OFS, Linux, or subjects of rational conversation in general is that he can't stay on topic and his writing barely meets 10th Grade English standards. How exactly does physical security at offices have anything to do with the validity of the claim, "Linux is more secure than Windows?" Do yourself and all of us a favor: take a basic English course at your local C.C. and find out what a topic sentence is really for!
Until it died, my Zodiac II doubled as an HP-48 emulator - basically adding another $150 in value to the device for free - with Power48. Honestly, with RPN, a built-in stack-based programming language, and advanced math functions, this is an incredible tool for Palm users. And did I mention it's free?
Right. In my Marketroid -> English dictionary, "new revenue generation dialogues with end users" is defined as, "A hitherto-unexperienced financial ass-raping."
Look at all the different answers here: everyone has a different opinion, even when talking about the same game, because everyone is looking for something different in their games. I generally despise overlong games that use the same mechanics all through, but I've been playing Chou Soujuu Mecha MG for nearly 200 hours (give or take a couple days the game was left on in my pocket) and I could gladly go for another 100. I can play around with X-plane for hours, but 15 minutes of Super Mario Brothers and I'm ready for a good book. Other people I know have run through Mega Man games in a single weekend but can't take more than a couple rounds of BF2 before they're too frustrated to continue. Perhaps there is a general rule for game length, something like, "shooters should be short, RPGs should be long", but even that fails to take into account things like mission length, player engagement, depth of story, or amount of action. There were times I wanted FFVII's story-advancing quests to just be over, please God, let me _go_... and there were times I wished that there was more to do in GTA3. It's all relative, it's always going to be an issue, but I do think it's good that people are talking about it.
I saw the LTSP presentation at Linux Fest 2006, and was quite pleased with the performance. It balances server-side application hosting and execution (ease of installation and administration) with client-side hardware that can be customized (3D acceleration, removable media, speakers) for a very flexible system overall. I'm considering setting an LTSP system up at my home, in fact: I could tuck the main server out of earshot and set up a couple of super-low-power clients around the house. With an ultraportable laptop, I could access the same user account no matter where I went but only have one main machine to update on a regular basis.
Don't forget to check your big words! I would be embarrassed to find I'd used 'empirical' when I meant 'imperative', but I'd be mortified to find I'd misspelled it as well! Don't show your ignorance: use a dictionary site!
The Straight Dope shows that the construction, "different than," is, both in general and in this case particularly, erronious. Please, people, think of the poor words before you butcher them!
Holograms are sections of mirrors, created by the interference of coherent light beams, which reflect light in such a way as to recreate images of the original subject from different angles. The reason that our brains perceive three dimensions is that each eye is receiving a slightly different image; the light has to travel slightly different paths through the mirrors to reach each eye, creating a parallax effect. Holograms are considerably more effecient than fresnel lenses because they are fundamentally different: holograms consist essentially of concentric sections of parabolic mirrors (IIRC) while a Fresnel lense is a series of concentric spherical lense sections.
I'm trying to remember the book I read which contained this description of how holograms work; most web sites just call holograms a kind of interference pattern or diffraction grating, without going into the details.
if only people who actually understood, say, chemistry or electricity or, or, or _English_ were allowed to post on news items? I mean, come on, "lesser than"?!
And yes, a fuel cell strips electrons from H2 in the process of creating H2O from H2 and O2 - a chemical reaction - and no, it does not take "lesser" energy to create the gases than is generated! But it sure generates less smog and polution than diesel, and is arguably as effecient as transmitting high-voltage electricity over long distances.
I sent the mayor of Tuttle an e-mail warning him of the error of Taylor's ways and the impending/. doom which may be headed for the web server of that fine city, but I also donated a few bucks to the CentOS team for having to put up with that moron.
Put your money where your mouth is... for who knows when CentOS is going to face a lawsuit for slandering Taylor?
I think that the best way to test a computer / components is to use a LiveCD: you get a fully-fledged OS as well as the tools you'll need to check and configure different hardware. When I was volunteering at Interconnection, I often brought in my own Knoppix 3.9 disk to test the old systems we would get. It's not *fast*, but legally it beats copying Win2K disks and just shutting them down once you got as far as the 'Ready to install' screen.
Another reason to like LiveCDs is that they're indistructible. With Knoppix, you can save personal settings to an HD with ever actually having to install the OS to the drive; alternatively, you can vet the hardware with the LiveCD, then move it to the HD as a Debian install.
The whole argument about which OS is better should be ignored; any OS is better than nothing, and you can get FOSS disks for a lot less than MS licenses, which for a non-profit should be a key consideration. I grew up with a Commodore 64, moved to a Mac SE, played with an Apple IIGS and Mac Color, then went with an IBM for my first self-bought machine; these kids need exposure to computer concepts and access to working systems more than they need to be kept within the bounds of the "majority" OS and its peccadillos.
That, or they should be forced to cut out their own entrails with a rusty spoon. Let's face it, Python can't be beat for interactive, interpreted power _and_ simplicity.
Slashdot Mirror
I don't want to give too many details, but at least one storage company has encountered 1% to 2% drive failure rate from spindle motor burnout *alone* on the Seagate 750GB drives. This is not counting bit rot.
There's at least one video of a guy doing just this, running XP on top of VirtualBox on top of Ubuntu. It's annoying and disgusting, but hey, at least this gives me a use for that XP license that's been lying dormant since my switch to Kubuntu :)
I did it, and you can too! For my setup you need five things:
1) Second-hand hardware - I just got an AMD 3800+, SLI mobo, and 1GB of RAM for $125 on CL.
2) A _good_ PSU - I recommend the Antec EarthWatts 430 for its quiet running and 80%+ efficiency - $60
3) A dirt-cheap case - Frys has a dozen workable cases for $50 or less.
4) 3+ drives at the lowest $/GB price point you can find - 3 250GB drives at Frys for $180 a year ago
5) A simple, easy-to-use Linux distro like Ubuntu, Kubuntu, Mandriva, etc. - Free!
Total: $415 ($500 gets you a dedicated drive controller and a separate boot drive of 80-120GB as well)
You can go el cheapo on the mobo, CPU, and RAM because pure performance is not your main concern. The PSU has *got* to be good quality, however. If possible, use a separate fourth drive as the machine's boot and swap partition so that a failure of a RAID drive doesn't jeopardize the host machine's operation, and vice-versa.
I started my RAID server with a P3-900, 512MB of RAM, 3 250GB IDE drives and a two-port IDE drive controller to complement the mobo's, a 40GB IDE drive I got free from work as the / and swap drive, a $40 aluminum case, and the Antec PSU. All told I think my outlay was around $370 because while I got the CPU, Mobo, and RAM for free (in exchange for volunteering at interconnection.org, check them out) the PSU was more expensive then.
Setup is fairly straightforward, although not intuitive: you have to install Linux, prepare your RAID drives for mdadm, format them, create the RAID array, and then mount it. Finally you have to create your NFS or Samba shares and create users and set permissions for the raid. Actually, setting up Samba might be the single most annoying part of the whole process! Luckily tutorials for all of these steps exist on the 'Net.
The reason I emphasize the non-RAID boot drive is ease of maintenance: my little 40GB drive bit the dust a couple weeks ago and I was able to swap it out, install a new version of Kubuntu, and reassemble my RAID just a few minutes later. If I'd thought about it, I could have been backing up my original server configs *to* the RAID for just such an eventuality, which would have made restoring the system even more trivial. Essentially, if you separate the components of the server itself as much as possible from the
If you have the time and are willing to put in some effort, I believe this will yield a more flexible and cost-effective solution than most commercial SOHO NAS solutions: I was able to use this machine as a RAID server, a web server for an experimental flash video hosting site, a backup workstation for working from home and for school projects, and as a quiet bittorrent client. The only caveat is that the less powerful your CPU is, the longer automated RAID checks will take, but you can schedule those for early in the morning and usually never notice the CPU being used. Software RAIDS are usually as performant as hardware versions for non-enterprise needs, and being able to swap the drives into better hardware without needing a proprietary drive controller is a godsend.
Hope this helps!
As I understand it, all the recent security ramp-ups have been at the express "request" of the US government, just like Japan's reluctant support of the war in Iraq. If you have a complaint, best take it to your representatives here in the US (or wherever you might be).
So... Too Human is Flavor Flav?
Sunshine, while visually sumptuous, is about the stupidest "space" movie in recent memory. Anything I saw happen in this "movie" could automatically be assumed to be the opposite of real life and common sense - I swear to god, this movie was so bad it gave me a stroke *and* the gout - so obviously you would A) not freeze instantly, and B) not be doing what those morons on the Icarus II were doing in the *first* place.
When I was in the Army Armor Corps., we were told that while turning a .50 caliber M2 machine gun on enemy troops would be a violation of the Geneva Conventions, shooting equipment that just happened to be carried by a troop was acceptable, even if it resulted in the death of the troop. Of course, to the troop involved it would probably make little difference if they were shot to death with an anti-personnel-rated 7.62 coax, the TC's .50 cal, or an unusually accurate HEAT round.
#1 - we're talking DS here, not Wii.
#2 - Rock 'N' Roll Racing is out for the GBA, which means it's out for the DS.
At least some of their storage is from Isilon Systems, Inc: 34TB could be as few as three nodes, or as many as 40, depending on what model they're using and whether they have any accelerator nodes.
I would say that the reason people don't want him talking about OSS, OFS, Linux, or subjects of rational conversation in general is that he can't stay on topic and his writing barely meets 10th Grade English standards. How exactly does physical security at offices have anything to do with the validity of the claim, "Linux is more secure than Windows?" Do yourself and all of us a favor: take a basic English course at your local C.C. and find out what a topic sentence is really for!
Until it died, my Zodiac II doubled as an HP-48 emulator - basically adding another $150 in value to the device for free - with Power48. Honestly, with RPN, a built-in stack-based programming language, and advanced math functions, this is an incredible tool for Palm users. And did I mention it's free?
Shouldn't this have been filed from the 'I-don't-know-the-difference-between-possessives-a nd-contractions-and-now-everyone-knows-it' department?
Right. In my Marketroid -> English dictionary, "new revenue generation dialogues with end users" is defined as, "A hitherto-unexperienced financial ass-raping."
Look at all the different answers here: everyone has a different opinion, even when talking about the same game, because everyone is looking for something different in their games. I generally despise overlong games that use the same mechanics all through, but I've been playing Chou Soujuu Mecha MG for nearly 200 hours (give or take a couple days the game was left on in my pocket) and I could gladly go for another 100. I can play around with X-plane for hours, but 15 minutes of Super Mario Brothers and I'm ready for a good book. Other people I know have run through Mega Man games in a single weekend but can't take more than a couple rounds of BF2 before they're too frustrated to continue. Perhaps there is a general rule for game length, something like, "shooters should be short, RPGs should be long", but even that fails to take into account things like mission length, player engagement, depth of story, or amount of action. There were times I wanted FFVII's story-advancing quests to just be over, please God, let me _go_... and there were times I wished that there was more to do in GTA3. It's all relative, it's always going to be an issue, but I do think it's good that people are talking about it.
I saw the LTSP presentation at Linux Fest 2006, and was quite pleased with the performance. It balances server-side application hosting and execution (ease of installation and administration) with client-side hardware that can be customized (3D acceleration, removable media, speakers) for a very flexible system overall. I'm considering setting an LTSP system up at my home, in fact: I could tuck the main server out of earshot and set up a couple of super-low-power clients around the house. With an ultraportable laptop, I could access the same user account no matter where I went but only have one main machine to update on a regular basis.
Don't forget to check your big words! I would be embarrassed to find I'd used 'empirical' when I meant 'imperative', but I'd be mortified to find I'd misspelled it as well! Don't show your ignorance: use a dictionary site!
If you've got much light reflecting off your eyes, you've got more serious problems than the effects of invisibility.
Erroneous should, of course, be spelled - this way, not ^ that way.
The Straight Dope shows that the construction, "different than," is, both in general and in this case particularly, erronious. Please, people, think of the poor words before you butcher them!
They live on Capitol Hill, and are thus not covered under the other two categories.
Holograms are sections of mirrors, created by the interference of coherent light beams, which reflect light in such a way as to recreate images of the original subject from different angles. The reason that our brains perceive three dimensions is that each eye is receiving a slightly different image; the light has to travel slightly different paths through the mirrors to reach each eye, creating a parallax effect. Holograms are considerably more effecient than fresnel lenses because they are fundamentally different: holograms consist essentially of concentric sections of parabolic mirrors (IIRC) while a Fresnel lense is a series of concentric spherical lense sections.
I'm trying to remember the book I read which contained this description of how holograms work; most web sites just call holograms a kind of interference pattern or diffraction grating, without going into the details.
if only people who actually understood, say, chemistry or electricity or, or, or _English_ were allowed to post on news items? I mean, come on, "lesser than"?!
And yes, a fuel cell strips electrons from H2 in the process of creating H2O from H2 and O2 - a chemical reaction - and no, it does not take "lesser" energy to create the gases than is generated! But it sure generates less smog and polution than diesel, and is arguably as effecient as transmitting high-voltage electricity over long distances.
I sent the mayor of Tuttle an e-mail warning him of the error of Taylor's ways and the impending /. doom which may be headed for the web server of that fine city, but I also donated a few bucks to the CentOS team for having to put up with that moron.
Put your money where your mouth is... for who knows when CentOS is going to face a lawsuit for slandering Taylor?
I think that the best way to test a computer / components is to use a LiveCD: you get a fully-fledged OS as well as the tools you'll need to check and configure different hardware. When I was volunteering at Interconnection, I often brought in my own Knoppix 3.9 disk to test the old systems we would get. It's not *fast*, but legally it beats copying Win2K disks and just shutting them down once you got as far as the 'Ready to install' screen.
Another reason to like LiveCDs is that they're indistructible. With Knoppix, you can save personal settings to an HD with ever actually having to install the OS to the drive; alternatively, you can vet the hardware with the LiveCD, then move it to the HD as a Debian install.
The whole argument about which OS is better should be ignored; any OS is better than nothing, and you can get FOSS disks for a lot less than MS licenses, which for a non-profit should be a key consideration. I grew up with a Commodore 64, moved to a Mac SE, played with an Apple IIGS and Mac Color, then went with an IBM for my first self-bought machine; these kids need exposure to computer concepts and access to working systems more than they need to be kept within the bounds of the "majority" OS and its peccadillos.
That, or they should be forced to cut out their own entrails with a rusty spoon. Let's face it, Python can't be beat for interactive, interpreted power _and_ simplicity.