Thats rather surprising. With my linux software RAID, I have been able to move the raid between machines with no problems. Yes, you have a little config files that says "drive one is/dev/hdb",etc but that isn't vital information for the RAID running. It was actually smart enough to know I ran it in the wrong order, and told me so! Try that with hardware RAID, which blindly does its thing.
Also, When your HARDWARE raid CARD dies, your screwed too. The card maintains the table/RAID information in its own memory not on disk. Yes, the newer/more expensive models save to disk, but even then you have to get an *exact* model replacement.
Make sure to get one with the same firmware version (that can change dramaticly how the cards function - which means drives used with newer software versions won't work with older one's, sometimes)
This actually happened to one of my friends. He had a hardware RAID-5, 8X drives with SCSI and a backup disk for his home. He went all the way with good brand drives/cards.
The card itself died, and boom he lost everything. Even with a replacement card, he still wasn't able to recover any of it. Had to start from scratch.
[FYI - I'm talking about true software raid, not a run-about through a card handler]
>Digital communications does not make things use less bandwidth.
It depends on what *kind* of digital communications. Using a trunk radio type of system, across giant chunks of the band would alleviate the space problem.
[current system] Lets say there are 10 radio channels. The current system is, 1 channel (or more) for each organization. So say Police gets #1, Fire gets #2, Medical get #3,etc Thus, you are limited in practice to only have 10 organizations being able to have radio's. This includes companies, which you cal sell channels to. Some could probably share the frequency, taking turns manually (or using tones) but its not that efficient.
I am station A, and want to talk to station B. I have to somehow before hand agree on a channel and/or time to talk on. This is rather inconvenant, so you just dedicate one channel to each organisation and monitor all the time.
Otherwise, you have to kill time with finding though hundreds of channels', calling out hoping he may find you (a *lot* of work.
[Proper, digital system I.E. trunk] Nows lets say, you went to a proper digital system. I.E. A trunk radio. On channel 1* there is a "net control" computer.
Both of our radios are on a "group" channel number, which points to each others radio. Our radios by default listen on channel 1. When I press the transmit button, my radio sends a data packet to the net control, asking for a channel to operate on. This is done in a fraction of a second, mind you. The computer then assigns a open frequency/channel, and "orders" both of our radios to switch to it. The moment Station A is done transmitting, both switch back to the main frequency thus freeing up the channel they were using. Although for convenience, they probably would re-use the same channel for further responses, but it is just as easy to switch channels each time there is a transmission.
This can allow in practice considerably more organizations use of the band. For the most part, not all of them are talking at the same time. So taking advantage of this more people can be "crammed" in. The same idea is in use with telephone/cell phone systems. As you can imagine, this would be a problem if more then 10 people wanted to talk at the same time. However, this is taking advantage of the probability that not everyone will not talk at the same time (as phone/cell/dsl companies do all the time).Easily, over 200 organizations could be signed up without having to worry about stepping on each others toes. Likely, over 1,000 org's would not be unreasonable to live with. With additional channels available, the ratio of channelsorganizations can increase, because the probability of all more use simultaneously decreases.
This is ignoring entirely the possible benefit of digital transmission methods with compression,etc. This could also allow for even more simultaneous conversations (not just organizations), with radios transmitting your audio for a fraction of a second, letting another radio go ahead, and then switching back. So quickly, that it sounds like a continuous transmission to a normal person. Then, add switching between channels in realtime with this, could increase the possibility of simultaneous conversations considerably. Conservatively Perhaps, from 10 to 50? If using a pure data like 802.11b at 11Mbps, you could probably have over 200 simultaneous conversations! With the even more advanced systems (802.11g at 54mbps) this could be even further.
That isn't to say, everything is perfect. However, its pretty darn close. So what is the primary downside? There are relatively minor. The only Primary concern is if there is a major disaster.
In which case, isn't really necessary to the general public only emergency personnel.
1) If the net-control station falls out of service for some reason. Although there can certainly be multiple backups of these stations. Obviously, if there is a earthquake/fire and it takes out the tower, thats it cowboy.
It seems rather simple to me. There is a limited amount of fossil fuel's in the world, and that is it. For all practical matters, you can't make any more (Would take millions of years). Thus, there is a limited supply period. You can't plant a Oil tree somewhere, and make some more.
At this point (from a history channel show), the majority of the "easy" places to dig have been used up. Most of the oil dug in the US has already been used up. What is left is a series of smaller and small collections of oil that we have to dig out, which increases the cost of digging it up.
What is left of the major deposits pretty much off-shore (as in, located in the ocean) and the oil deposits in the middle east. Thats it. It will become a economically unreasonable resource, pretty soon. This is Ignoring all political and environmental objectives.
In this case, earthlink and timewarner have made an deal, indepednant of the laws. [Another way of saying is it that they decided to work together and were not forced to by law]. Also, important to note that this practice is no where near wide spread. Its really an few test markets for the time being.
From my understanding, it is mostly an branding thing. You may be lucky and pay an few dollars less, but you are still going through the same backbone et al. Although, I may be wrong about this.
Carbon, is an backwords-compatiable programming environment for running old programs in os x natively. I.E., you take your "old" program that already exists for os 9, add some carbon code and compile. No need to re-create the program from scratch. As an benefit, the same binary file can work in both os 9 and os x (although not in 8 and below)
Cocoa, is apple's Object-C language, which creates os x native only programs. It has some nifty features, and runs an *lot* better then carbon. Although, you still need to learn the new language.
More can be found out here http://developer.apple.com/macosx/architectu re/ind ex.html
Seriously though. How about getting an couple large gel-cell/sealed lead acid/marine batteries and charging them up at work. It might be an problem with weekends (just get more batteries), but certianly can do for daily power usage without too much trouble.
The cost is that big in large part because it was built leaving current systems intact. They didn't just wipe the slate clean - they had to built it between the existing roads, tunnels, subways, water/power mains,etc. Not to mention on landfill, so they had to install tons of reinforcing concrete into the ground to support all of this.
The History Channel's Modern Marvels had an excellent episode on the big dig:)
You are also paying for an battery installation. The rechargeable li-ion battery live inside the ipod. There is no little door you can open to swap the battery. You have to open it up with an screwdriver to get to it, which most people are *not* willing to do. Not to mention voids the warranty.
Li-ion batteries are also inherently *significantly* more expensive. They have about twice the power density of NiMH and have no "memory" issues at all. Unlike NiCD/NiMH batteries.
WOW! I just called tivo, and getting an replacement. They said their warranty is now 90 day's. I've had mine for 6 months and the disk died, with nearly identical symptoms. On *top* of that, its an $99 "parts" fee, plus an full price collateral charged ahead of time, in case I don't ship the old one back. Oy. Now with this article, I'm starting to think twice..
The irony here is, our Tivo *is* on an UPS, and the disk has slowly degraded over time. It might be worht it to reimage, but I fear it may be too late:(.
I can't explain the heavy I/O Problems as well. There has been an recent BIOS Update [1007], which has helped it an bit (Claimed about an fix for an certain type of memory). Still, it has an issue now and then.
The only real way I've been able to solve it is to under-clock the CPU. I got an Athlon 2500+, which should do 266bus and be all happy. I crank down the bus to 100 (so it runs at 1100) and its rock solid. I am disappointed - asus normally makes good stuff. I doubt that its heat - I got plenty of cooling. I'm running at ~35-37C all the time - way below specifications, not to mention what most people run at.
Ironically, if I boot into windows (dual-boot), it runs fine at full speed. I can't explain that. They have some fixes in.23 now too, but I haven't updated yet- maybe that would catch the rest of the problems. Its not really an problem for me because I only really need the speed in windows for gaming anyway.
Re:Mine is 1024 too...
on
RSA-576 Factored
·
· Score: 2, Informative
Yes! Especially, if you are using gnupg.
There has been an big compromise found using elgamel keys and GnuPG!
BEWARE - Some of those plans (presumably the cheaper one's) are meant for use only inside the phone itself (Camera phone/Cell Phone "Web"). *not* for driving an laptop or whatever. An number of people have gotten burned because they have done this and used an "large" amount of bandwidth, to make themselves show up to their radar.
If your quiet enough, you can probably get away with it.
I remember there used to be an CNET TV Show. Not their own network, but an show that was on Sunday mornings. I wonder what happened? As I remember the web-site was made to *supplement* the tv show - not the other way around.
Anyone remember the answer guys? I wonder what has happened to them. It was certianly my favorite segment of the show.
Digest version is - it pretty much turns your cell phone into a "walkie talkie".
The long version-...except, it works through the cell phone network. So if you get no signal, even if your right next to the person, then no go. Don't even *think* about using these guys in an emergency either. Phones/Cell phones are one the first things that go out during an emergency.
You are somehow "coded" to each other, so you can only talk/listen to the people you care about (family/boss/whatever).
Beneift is don't have to worry about being line of sight (or within range). Also its on your cell phone which you allready carry around with you. Also, you "don't have roaming/min charges". Of course, I feel that will change...
The obvious downside is, only works if you got good cell reception and its costs more money (per month). Also, will only work if your on the same network, and probably have the same plan.
Oh yeah? ever tried \\server\c$ ? By defualt on windows up to 2k (have not tried with xp) this is open.*everything* is shared by defualt. True, you still need to login *but* most people leave administrator's password blank...
Not to mention there is many other methods to get past that even if there is a password..
I take it you have *only* tried useing KDE and Gnome?
There are many "alternative" light-weight window managers out there. Such as blackbox, xfce, icewm...
Pretty much all of these are just as fast if not faster then a windows gui.
KDE and Gnome are really "everything and the kitchen sink" window managers, which is nice if you want things to be pretty but that adds a lot of bloat.
>No, they don't divide the entire budget by the >number of K12 students. The figures are provided by >the office of the State Controller every year. >Education spending has gone up 80% in the last five >years. $230,000 per classroom after paying for the >teacher. Where's the money? It sure ain't going to >repairing the crumbling schools or providing books
Indeed. At my high school, we are "updating" our phone system to cisco voice over ip phones. Paying about $500 each for each phone, plus upgrades for new cabling and expensive special switches to work with such phones. Our old phone system was perfectly fine. Need a new phone? go down to a drug store and pickup a new set for 5 bucks..
[FYI - I'm in California, San Fransisco bay area.]
Also, ignoring the fact that these new phones suck down *tons* of power. So if the power goes out because of a fire [quite likely] you can't make a call to the fire department. The old normal land line phones [mini-CO/PBX] could work for hours on a decent sized UPS. I know, their backup plan is to have everyone call in using their cell phones which by school rules are banned but everyone brings anyway ^_^
I have noticed other schools (elementry) "updating" their systems as well. There is no benefit whatsoever for the school Its simply there as a political scheme to have the school's all "high tech".. Of course, in 5 years the voice over ip standard will be different so we can't get any new phones/be forced to upgrade in the future again anyway.. I would much rather have a new textbook (our are quite crummy - heck, most are older then *we* are!) then fancy phones which we don't need anyway...
Of course, I won't start on how "good" our computers are...
Slashdot Mirror
Thats rather surprising. With my linux software RAID, I have been able to move the raid between machines with no problems. Yes, you have a little config files that says "drive one is /dev/hdb",etc but that isn't vital information for the RAID running. It was actually smart enough to know I ran it in the wrong order, and told me so! Try that with hardware RAID, which blindly does its thing.
Also, When your HARDWARE raid CARD dies, your screwed too. The card maintains the table/RAID information in its own memory not on disk. Yes, the newer/more expensive models save to disk, but even then you have to get an *exact* model replacement.
Make sure to get one with the same firmware version (that can change dramaticly how the cards function - which means drives used with newer software versions won't work with older one's, sometimes)
This actually happened to one of my friends. He had a hardware RAID-5, 8X drives with SCSI and a backup disk for his home. He went all the way with good brand drives/cards.
The card itself died, and boom he lost everything. Even with a replacement card, he still wasn't able to recover any of it. Had to start from scratch.
[FYI - I'm talking about true software raid, not a run-about through a card handler]
>Digital communications does not make things use less bandwidth.
It depends on what *kind* of digital communications.
Using a trunk radio type of system, across giant chunks of the band would alleviate the space problem.
[current system]
Lets say there are 10 radio channels. The current system is, 1 channel (or more) for each organization.
So say Police gets #1, Fire gets #2, Medical get #3,etc
Thus, you are limited in practice to only have 10 organizations being able to have radio's.
This includes companies, which you cal sell channels to.
Some could probably share the frequency, taking turns manually (or using tones) but its not that efficient.
I am station A, and want to talk to station B. I have to somehow before hand agree on a channel and/or time to talk on.
This is rather inconvenant, so you just dedicate one channel to each organisation and monitor all the time.
Otherwise, you have to kill time with finding though hundreds of channels', calling out hoping he may find you (a *lot* of work.
[Proper, digital system I.E. trunk]
Nows lets say, you went to a proper digital system. I.E. A trunk radio.
On channel 1* there is a "net control" computer.
Both of our radios are on a "group" channel number, which points to each others radio. Our radios by default listen on channel 1. When I press the transmit button, my radio sends a data packet to the net control, asking for a channel to operate on. This is done in a fraction of a second, mind you. The computer then assigns a open frequency/channel, and "orders" both of our radios to switch to it. The moment Station A is done transmitting, both switch back to the main frequency thus freeing up the channel they were using. Although for convenience, they probably would re-use the same channel for further responses, but it is just as easy to switch channels each time there is a transmission.
This can allow in practice considerably more organizations use of the band. For the most part, not all of them are talking at the same time. So taking advantage of this more people can be "crammed" in. The same idea is in use with telephone/cell phone systems. As you can imagine, this would be a problem if more then 10 people wanted to talk at the same time. However, this is taking advantage of the probability that not everyone will not talk at the same time (as phone/cell/dsl companies do all the time).Easily, over 200 organizations could be signed up without having to worry about stepping on each others toes. Likely, over 1,000 org's would not be unreasonable to live with. With additional channels available, the ratio of channelsorganizations can increase, because the probability of all more use simultaneously decreases.
This is ignoring entirely the possible benefit of digital transmission methods with compression,etc. This could also allow for even more simultaneous conversations (not just organizations), with radios transmitting your audio for a fraction of a second, letting another radio go ahead, and then switching back. So quickly, that it sounds like a continuous transmission to a normal person. Then, add switching between channels in realtime with this, could increase the possibility of simultaneous conversations considerably. Conservatively Perhaps, from 10 to 50? If using a pure data like 802.11b at 11Mbps, you could probably have over 200 simultaneous conversations! With the even more advanced systems (802.11g at 54mbps) this could be even further.
That isn't to say, everything is perfect. However, its pretty darn close.
So what is the primary downside? There are relatively minor.
The only Primary concern is if there is a major disaster.
In which case, isn't really necessary to the general public only emergency personnel.
1) If the net-control station falls out of service for some reason. Although there can certainly be multiple backups of these stations. Obviously, if there is a earthquake/fire and it takes out the tower, thats it cowboy.
Sounds like your on a mac.
If your running mac os x go and get vlc (video lan client)
http://www.videolan.org/
It seems rather simple to me. There is a limited amount of fossil fuel's in the world, and that is it. For all practical matters, you can't make any more (Would take millions of years). Thus, there is a limited supply period. You can't plant a Oil tree somewhere, and make some more.
At this point (from a history channel show), the majority of the "easy" places to dig have been used up. Most of the oil dug in the US has already been used up. What is left is a series of smaller and small collections of oil that we have to dig out, which increases the cost of digging it up.
What is left of the major deposits pretty much off-shore (as in, located in the ocean) and the oil deposits in the middle east. Thats it. It will become a economically unreasonable resource, pretty soon. This is Ignoring all political and environmental objectives.
As well as, the content regulations as well.
I.E. No commercial traffic (uh... the majority of all websites one way or the other) and no profanity.
In this case, earthlink and timewarner have made an deal, indepednant of the laws. [Another way of saying is it that they decided to work together and were not forced to by law]. Also, important to note that this practice is no where near wide spread. Its really an few test markets for the time being.
From my understanding, it is mostly an branding thing. You may be lucky and pay an few dollars less, but you are still going through the same backbone et al. Although, I may be wrong about this.
I know, too many codewords.
u re/ind ex.html
Carbon, is an backwords-compatiable programming environment for running old programs in os x natively. I.E., you take your "old" program that already exists for os 9, add some carbon code and compile. No need to re-create the program from scratch. As an benefit, the same binary file can work in both os 9 and os x (although not in 8 and below)
Cocoa, is apple's Object-C language, which creates os x native only programs. It has some nifty features, and runs an *lot* better then carbon. Although, you still need to learn the new language.
More can be found out here
http://developer.apple.com/macosx/architect
Thats why you disable the Tivo Suggestions.
Its the first thing I did when I got the tivo.
Setup -> Settings -> Preferences -> Tivo Suggestions -> No.
I live at home with 5 people, with 5 different tastes. Safe to say, tivo suggestions are next to useless for us and wastes space.
Thats AC (Tesla) vs DC (Edison).
Seriously though.
How about getting an couple large gel-cell/sealed lead acid/marine batteries and charging them up at work. It might be an problem with weekends (just get more batteries), but certianly can do for daily power usage without too much trouble.
Or maybe you get an transmeta crusoe and get 12 hours..
Seriously. Those things use *very* little power at all. Admitably, they are not fast but pleanty for word/office/basic coding.
The cost is that big in large part because it was built leaving current systems intact. They didn't just wipe the slate clean - they had to built it between the existing roads, tunnels, subways, water/power mains,etc. Not to mention on landfill, so they had to install tons of reinforcing concrete into the ground to support all of this.
:)
The History Channel's Modern Marvels had an excellent episode on the big dig
You are also paying for an battery installation. The rechargeable li-ion battery live inside the ipod. There is no little door you can open to swap the battery. You have to open it up with an screwdriver to get to it, which most people are *not* willing to do. Not to mention voids the warranty.
Li-ion batteries are also inherently *significantly* more expensive. They have about twice the power density of NiMH and have no "memory" issues at all. Unlike NiCD/NiMH batteries.
WOW! I just called tivo, and getting an replacement. They said their warranty is now 90 day's. I've had mine for 6 months and the disk died, with nearly identical symptoms. On *top* of that, its an $99 "parts" fee, plus an full price collateral charged ahead of time, in case I don't ship the old one back. Oy. Now with this article, I'm starting to think twice..
:(.
The irony here is, our Tivo *is* on an UPS, and the disk has slowly degraded over time. It might be worht it to reimage, but I fear it may be too late
Ah yes, I got the exact same board are you do.
.23 now too, but I haven't updated yet- maybe that would catch the rest of the problems. Its not really an problem for me because I only really need the speed in windows for gaming anyway.
I can't explain the heavy I/O Problems as well. There has been an recent BIOS Update [1007], which has helped it an bit (Claimed about an fix for an certain type of memory). Still, it has an issue now and then.
The only real way I've been able to solve it is to under-clock the CPU. I got an Athlon 2500+, which should do 266bus and be all happy. I crank down the bus to 100 (so it runs at 1100) and its rock solid. I am disappointed - asus normally makes good stuff. I doubt that its heat - I got plenty of cooling. I'm running at ~35-37C all the time - way below specifications, not to mention what most people run at.
Ironically, if I boot into windows (dual-boot), it runs fine at full speed. I can't explain that. They have some fixes in
Yes!
i d= 1
Especially, if you are using gnupg.
There has been an big compromise found using elgamel keys and GnuPG!
http://www.auscert.org.au/render.html?it=3648&c
Well... yes and no.
BEWARE - Some of those plans (presumably the cheaper one's) are meant for use only inside the phone itself (Camera phone/Cell Phone "Web"). *not* for driving an laptop or whatever. An number of people have gotten burned because they have done this and used an "large" amount of bandwidth, to make themselves show up to their radar.
If your quiet enough, you can probably get away with it.
And yes, to students. Also in carts for when the extra horsepower is needed (Specifically Video Editing).
Not all schools are handing out *only* ibooks. I've seen a few schools handing out 12" POWERbooks.
I remember there used to be an CNET TV Show. Not their own network, but an show that was on Sunday mornings. I wonder what happened? As I remember the web-site was made to *supplement* the tv show - not the other way around.
Anyone remember the answer guys? I wonder what has happened to them. It was certianly my favorite segment of the show.
Okay.
...except, it works through the cell phone network. So if you get no signal, even if your right next to the person, then no go. Don't even *think* about using these guys in an emergency either. Phones/Cell phones are one the first things that go out during an emergency.
Digest version is - it pretty much turns your cell phone into a "walkie talkie".
The long version-
You are somehow "coded" to each other, so you can only talk/listen to the people you care about (family/boss/whatever).
Beneift is don't have to worry about being line of sight (or within range). Also its on your cell phone which you allready carry around with you. Also, you "don't have roaming/min charges". Of course, I feel that will change...
The obvious downside is, only works if you got good cell reception and its costs more money (per month). Also, will only work if your on the same network, and probably have the same plan.
What on earth are you talking about?? Futurama is currently on season *five*.
Oh yeah? ever tried
\\server\c$ ?
By defualt on windows up to 2k (have not tried with xp) this is open.*everything* is shared by defualt. True, you still need to login *but* most people leave administrator's password blank...
Not to mention there is many other methods to get past that even if there is a password..
-macmouse
I take it you have *only* tried useing KDE and Gnome?
There are many "alternative" light-weight window managers out there. Such as blackbox, xfce, icewm...
Pretty much all of these are just as fast if not faster then a windows gui.
KDE and Gnome are really "everything and the kitchen sink" window managers, which is nice if you want things to be pretty but that adds a lot of bloat.
>No, they don't divide the entire budget by the >number of K12 students. The figures are provided by >the office of the State Controller every year. >Education spending has gone up 80% in the last five >years. $230,000 per classroom after paying for the >teacher. Where's the money? It sure ain't going to >repairing the crumbling schools or providing books
Indeed. At my high school, we are "updating" our phone system to cisco voice over ip phones. Paying about $500 each for each phone, plus upgrades for new cabling and expensive special switches to work with such phones. Our old phone system was perfectly fine. Need a new phone? go down to a drug store and pickup a new set for 5 bucks..
[FYI - I'm in California, San Fransisco bay area.]
Also, ignoring the fact that these new phones suck down *tons* of power. So if the power goes out because of a fire [quite likely] you can't make a call to the fire department. The old normal land line phones [mini-CO/PBX] could work for hours on a decent sized UPS. I know, their backup plan is to have everyone call in using their cell phones which by school rules are banned but everyone brings anyway ^_^
I have noticed other schools (elementry) "updating" their systems as well. There is no benefit whatsoever for the school Its simply there as a political scheme to have the school's all "high tech".. Of course, in 5 years the voice over ip standard will be different so we can't get any new phones/be forced to upgrade in the future again anyway.. I would much rather have a new textbook (our are quite crummy - heck, most are older then *we* are!) then fancy phones which we don't need anyway...
Of course, I won't start on how "good" our computers are...