NO, I am talking about present day enterprise level computer room cooling. Some small, non-enterprise level installations may not need distributed air handlers and can get by with other air conditioning arrangements. Hell, I have even seen a few small computer rooms cooled with home type central air conditioners.
Liebert air handlers are pretty much the gold standard for data center cooling. Whether you are cooling a couple thousand square feet or several hundred thousand square feet of computer cabinets, you need to have distributed air handlers. The air handlers are supplied with chilled water from water chillers that are located outdoors. The air handlers draw air in through the top, cool the air, add humidity if needed, and then blow the air out the bottom; pressurizing the area under the floor with cool air. Cool air is vented up through the floor wherever cooling is needed, either near the computer cabinets or directly into the cabinets.
In the 1980's at the Riyadh, Saudi Arabia airport, I was going through a security check that didn't have an x-ray machine. A security guard carrying an M-16 dumped electric razor whisker dust all over himself when he found out that the little button on my razor causes the triple heads to pop open. He very quickly set the still open razor down in my briefcase and handed my briefcase back to me, with the lid still open. It reminded me of my cats when they do something stupid and then try to pretend that they meant to do that.
" a "Homeland Security" officer inverted my laptop bag, dumping out the contents onto a desk from over a foot high. Laptop, point and shoot camera, cell phone and a portable hard drive loaded with photos all came crashing down."
It helps if you heed the prominently displayed signs and take your laptop out of the bag as instructed before you present it for inspection.
The worst situation that I have seen was a wiring closet full of Cisco gear that had an air handler mounted in the ceiling, the drain plugged up and the water started raining down onto the Cisco racks on the Friday before a long weekend.
I also worked in a Bell telco office that had a water boiler type humidifier mounted in the ceiling over a #1 4W ESS AUTOVON switch (cold war era military telephone network). The humidifier tank rusted out and scalding, crusty water ran all over several racks carrying military telco traffic. The worst part was that the humidifier was over 20 years old and replacement parts were unavailable. Luckily the flood didn't cause a switch outage. Almost all of the AUTOVON #1 4W ESS's ran for thirty years with ZERO down time. There were three controllers in the switch, any two controllers could declare a third controller to be insane and cut it off.
The AT&T AUTOVON offices had WECo built switches and were located in underground buildings. The non-AT&T AUTOVON switches were made by Automatic Electric and many were located in above ground buildings. The AT&T switches passed the government EMP tests and the buildings were shock mounted heavy duty underground fallout shelters that were designed to survive a nuclear detonation that wasn't all that far away. Everything was shock mounted, even the toilets were mounted on rubber shock mounts. The non-AT&T switches usually did not pass the government EMP tests and required very high speed tape drives to reload the controller memory in the event of an EMP caused by a nuclear weapon detonation. The above ground buildings had huge sprinkler systems that were intended to wash the fallout off of the roof of the building. Luckily the nuclear resistance of any of these buildings was never tested.
Almost all of the data centers that I have been in have some number of Liebert air handlers in the server room. All of these Liebert air handlers have an evaporator which requires a drain and most of them have a humidifier that requires a water source.
This analogy sucks because a guy leaving his door unlocked doesn't normally affect others and there is no need to publicize it.
Gray Hat hacking is like discreetly telling the guy that his car door is open, waiting for a while to give him a chance to lock his door, then yelling "Hey This Car Door is Open and all the valuables are inside". The most hotly debated item is how long the waiting part of "waiting for a while to give him a chance" should be because there is no clear consensus on how long it should be. Vendors believe that the waiting time should be until the vendor announces the vulnerability, which may be 'never'. Some Gray Hats believe that a vulnerability should be publicized as soon as it is discovered.
The biggest issue is that vendors rarely say how to report security vulnerabilities in a way that the vendor will acknowledge that it has been made aware of the potential vulnerability. This lack of acknowledgment is the primary reason for Gray Hats having to publicize the vulnerability. Another big issue is that security engineers live and die by being the first to report a vulnerability -- and vendors don't usually give credit to the engineer who reported the vulnerability to them. Even if a patch for a serious vulnerability is released the vendor may not even acknowledge that a serious vulnerability has been patched.
I am not sure, but I suspect that if the buyer received negative feedback about this incident that he could contest the feedback and have it removed. It appears that the buyer paid for the $20 item in good faith and that the item that he had "won" was not sent to him, he was well within his rights to stop payment on the item that he didn't receive. The buyer's conduct concerning the $300 item is none of Ebay's business.
In the US and other places that use British Common Law; if the bank accidentally transfers money into your account, it is called unjust enrichment and they can take it back.
In the US, Canada, UK, and many other countries; if somebody sends an INDIVIDUAL an item that was unsolicited, the receiver may considered it to be a gift. The laws differ by country if a BUSINESS receives something that was unsolicited.
On a forum, a guy who sells collectibles on ebay had a big problem because he mixed up two boxes that he sent to buyers; one contained a $300 item and the other a $20 item. The seller talked to a lawyer who essentially told the seller that he was shit out of luck. The seller had the lawyer type up a (useless) letter demanding that the $300 item be returned and sent it to the buyer.
The buyers reported to ebay/paypal that they hadn't received their items. The buyer who received the demand letter then mailed a cheap toy to the seller. A week later the buyer sent the seller a letter containing the same wording as the letter that the seller had sent, demanding that the seller return the cheap toy. Needless to say, the seller's postings became quite livid at this point.
In the end the seller was out the $300 item and shipping costs, and both paypal transfers were canceled. One buyer received a $300 item as an unsolicited gift and the other buyer returned the $20 item to the seller (seller paid the shipping). I don't know what happened to the cheap toy.
Well, yeah, the glass used in CRTs contains quite a bit of lead.
My CRT Sony WEGA weighs over 200 pounds and I think that most of the weight is in the face of the CRT. This set requires a special TV stand just to hold the weight and there is NOTHING to hold onto when moving it. The old Sony TVs were rectangular boxes that had carrying handles, the newer ones are odd shaped round cornered blobs with no handles; the only flat parts are the bottom of the cabinet and the face of the CRT.
It pissed me off when the set was delivered. I had paid for in-house delivery and box removal, which the salesman said was supposed to mean that the TV would be unpacked and set in place. I live on the 2nd story of a condo with a significant number of stairs from the parking lot up to the common door of the condo. I would have been happy if the set had been carried up the stairs and left in my living room, still in the box. I took the day off of work to be home when it was delivered. The delivery truck driver arrived by himself, with no helper.
The driver told me that the warehouse didn't know that the set weighted so much so they didn't send a helper and that either I had to help him carry it up the stairs or he would leave the set at the curb. I called the store that I bought it from and was told that the delivery was my responsibility and that they had just arranged it for me. I called the delivery company and was told that they didn't have anybody to send out to carry it in and that they would refund me the difference between curb side and inside delivery. I was also told that if the driver helped me carry to it upstairs that I wouldn't get the $15 refund. If I refused delivery, I would have to pay for the delivery attempt, pay for storage, and pay again for another delivery. I helped the driver carry it upstairs.
I talked to a lawyer about it and was told that I was out of luck; the law was on the side of the cartage company and the retailer was totally out of the loop, they had simply acted as my agent to arrange delivery.
I admit it, I now have more gadgets drawing current than I did five years ago. I have also reduced power consumption in the past five years. Five years ago, my typical electric bill was US $125 a month, it is now in the $75 range. None of the changes have caused any hardships or reduction in quality of life.
1. Replaced heat pump with a more efficient model and installed set back thermostat. I lucked out, the compressor crapped out and I had a service policy. The impact on quality of life is nil, I had to learn the new thermostat.
2. Replaced refrigerator with a more efficient model. It was expensive but the old refrigerator was about 30 years old and was reaching the end of it's service life. It is a nicer refrigerator than the old one and it is quieter.
3. Replaced commonly used light bulbs with compact fluorescent. This was an inexpensive change and it had the most impact on quality of life. The color and light quality of the new compact fluorescents compares to the old lights but they take a few minutes to produce full light output. They remind me of a tube type radio warming up.
I think that the most interesting replacements were the night lights. I replaced the 6 night lights that used to draw about 4 watts each with LEDs. I connected a wall wart to an unused wire pair in my home telephone wiring and I use the phone wiring to transport power to my night light LEDs. I had the wall wart, LEDs, and other parts in my junk box -- and they work great.
The light conversion is both saving power used for lighting and reducing the summer air conditioning load. Someday I might even figure out how long it will take to save any money by replacing those lights. The main light in the living room was a 300 watt halogen torchiere which I replaced with three fluorescent flood lights which cost $35 for a new floor lamp and bulbs, rated power consumption went from 300 watts down to about 75 watts; and I frequently don't turn on all three of the bulbs. This summer I noticed that the living room was much cooler with the new lights. The kitchen is saving a similar amount of watts but the lights in the kitchen are not used very often.
The cure to this problem is for you to use your ISP's mail relay (or any other mail server that isn't using a dynamic IP address; which is usually residential grade internet service). I run a mail server for a rather large company and the server is configured to reject SMTP connections from dynamic IPs, which prevents quite a bit of spam -- and the sender is aware that the mail has been rejected.
HUH?, that's not even wrong. The chrominance signal is used by NTSC, PAL, and SECAM. The chroma signal is a subcarrier that contains the chroma information for the picture. They are not really separate signals, the chroma subcarrier just provides additional video information for those receivers that can use it. The information carried by the chroma subcarrier is totally useless without the video carrier.
Is NIST any more independent than the other agencies (and their scientists) that have been pressured by the Administration to toe the Christian Right Republican Party Line?
mp3.com exists again (www.mp3.com) and it is now part of CNet. It offers free mp3 downloads from new artists and full track streaming audio new releases from established artists.
Telecommunications tax (or monopoly) on telephone calls is likely to be considered to be one item by the government. If it is a tax issue, it is not unusual for telephone calls to be taxed, and some governments consider VoIP to be evading taxes. Although in India's case they may killing a golden cash cow because this is going to raise costs to their outsourcing industry.
This whole article assumes that Google exists for the convenience of websites -- it doesn't. Google exists for the convenience of USERS who, as a group, view advertisers' paid links. As a user, I don't give a shit if Google notifies website owners about their reasons for delisting.
It's too late for SCO to cut their losses and bow out. IBM has counterclaims that they won't drop and probably won't even settle. I don't remember the details, but I believe that SCO could have criminal liability if they drop the case now. I believe that IBM could ask the court to require that SCO pay their legal expenses, which would severely cripple SCO, and possibly wipe them out.
I gave my mom and dad a new turntable last Christmas, they are in their 70's and love the music on their old records. They have a nice stereo system with a 200 CD player, that they also use.
I am in my 50's and used play LPs all of the time. Every time an LP is played, the music quality is degraded just a bit more. LPs and turntables are also a royal pain in the ass to use and maintain.
I used to have high end turntables and a few hundred LPs. I tossed or gave away the turntables and most of the LPs well over 10 years ago. I stored maybe 20 LPs that I thought that I might want to listen to again, and they will be trashed whenever I get around to cleaning out the storage unit.
The very last of my LP collection will soon follow my cassettes, reel-to-reel tape, and video disk collections into oblivion.
I used to work for a long distance company that used to guarantee 99.9% availability for DS1 circuits, which sounded good at the time. Most customers didn't realize that guaranteed 99.9% availability meant that there could be over 8 hours of outage during a year.
There are many possible sources of odor in a new house, treated lumber should not be one of them. The lumber used in framing houses is not normally treated, lumber on decks and some other outside parts of a house are treated to prevent insect damage and rot. Chemical adhesives are used in making plywood and particle board, both of which are common in new houses. Adhesive is also used in the construction of houses. One major item in new houses that contribute to the odor is the carpet. Many interior finishes have an odor, especially vinyl wallcovering. Window blinds and fabrics also have odors.
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NO, I am talking about present day enterprise level computer room cooling. Some small, non-enterprise level installations may not need distributed air handlers and can get by with other air conditioning arrangements. Hell, I have even seen a few small computer rooms cooled with home type central air conditioners.
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Liebert air handlers are pretty much the gold standard for data center cooling. Whether you are cooling a couple thousand square feet or several hundred thousand square feet of computer cabinets, you need to have distributed air handlers. The air handlers are supplied with chilled water from water chillers that are located outdoors. The air handlers draw air in through the top, cool the air, add humidity if needed, and then blow the air out the bottom; pressurizing the area under the floor with cool air. Cool air is vented up through the floor wherever cooling is needed, either near the computer cabinets or directly into the cabinets.
One example of cooling an 8,400 square foot computer room is available at http://www.cisl.ucar.edu/news/05/lead/0919.coolin
In the 1980's at the Riyadh, Saudi Arabia airport, I was going through a security check that didn't have an x-ray machine. A security guard carrying an M-16 dumped electric razor whisker dust all over himself when he found out that the little button on my razor causes the triple heads to pop open. He very quickly set the still open razor down in my briefcase and handed my briefcase back to me, with the lid still open. It reminded me of my cats when they do something stupid and then try to pretend that they meant to do that.
" a "Homeland Security" officer inverted my laptop bag, dumping out the contents onto a desk from over a foot high. Laptop, point and shoot camera, cell phone and a portable hard drive loaded with photos all came crashing down."
It helps if you heed the prominently displayed signs and take your laptop out of the bag as instructed before you present it for inspection.
The worst situation that I have seen was a wiring closet full of Cisco gear that had an air handler mounted in the ceiling, the drain plugged up and the water started raining down onto the Cisco racks on the Friday before a long weekend.
I also worked in a Bell telco office that had a water boiler type humidifier mounted in the ceiling over a #1 4W ESS AUTOVON switch (cold war era military telephone network). The humidifier tank rusted out and scalding, crusty water ran all over several racks carrying military telco traffic. The worst part was that the humidifier was over 20 years old and replacement parts were unavailable. Luckily the flood didn't cause a switch outage. Almost all of the AUTOVON #1 4W ESS's ran for thirty years with ZERO down time. There were three controllers in the switch, any two controllers could declare a third controller to be insane and cut it off.
The AT&T AUTOVON offices had WECo built switches and were located in underground buildings. The non-AT&T AUTOVON switches were made by Automatic Electric and many were located in above ground buildings. The AT&T switches passed the government EMP tests and the buildings were shock mounted heavy duty underground fallout shelters that were designed to survive a nuclear detonation that wasn't all that far away. Everything was shock mounted, even the toilets were mounted on rubber shock mounts. The non-AT&T switches usually did not pass the government EMP tests and required very high speed tape drives to reload the controller memory in the event of an EMP caused by a nuclear weapon detonation. The above ground buildings had huge sprinkler systems that were intended to wash the fallout off of the roof of the building. Luckily the nuclear resistance of any of these buildings was never tested.
Almost all of the data centers that I have been in have some number of Liebert air handlers in the server room. All of these Liebert air handlers have an evaporator which requires a drain and most of them have a humidifier that requires a water source.
This analogy sucks because a guy leaving his door unlocked doesn't normally affect others and there is no need to publicize it.
Gray Hat hacking is like discreetly telling the guy that his car door is open, waiting for a while to give him a chance to lock his door, then yelling "Hey This Car Door is Open and all the valuables are inside". The most hotly debated item is how long the waiting part of "waiting for a while to give him a chance" should be because there is no clear consensus on how long it should be. Vendors believe that the waiting time should be until the vendor announces the vulnerability, which may be 'never'. Some Gray Hats believe that a vulnerability should be publicized as soon as it is discovered.
The biggest issue is that vendors rarely say how to report security vulnerabilities in a way that the vendor will acknowledge that it has been made aware of the potential vulnerability. This lack of acknowledgment is the primary reason for Gray Hats having to publicize the vulnerability. Another big issue is that security engineers live and die by being the first to report a vulnerability -- and vendors don't usually give credit to the engineer who reported the vulnerability to them. Even if a patch for a serious vulnerability is released the vendor may not even acknowledge that a serious vulnerability has been patched.
Yeah, I agree that legality != morality.
I am not sure, but I suspect that if the buyer received negative feedback about this incident that he could contest the feedback and have it removed. It appears that the buyer paid for the $20 item in good faith and that the item that he had "won" was not sent to him, he was well within his rights to stop payment on the item that he didn't receive. The buyer's conduct concerning the $300 item is none of Ebay's business.
In the US and other places that use British Common Law; if the bank accidentally transfers money into your account, it is called unjust enrichment and they can take it back.
In the US, Canada, UK, and many other countries; if somebody sends an INDIVIDUAL an item that was unsolicited, the receiver may considered it to be a gift. The laws differ by country if a BUSINESS receives something that was unsolicited.
On a forum, a guy who sells collectibles on ebay had a big problem because he mixed up two boxes that he sent to buyers; one contained a $300 item and the other a $20 item. The seller talked to a lawyer who essentially told the seller that he was shit out of luck. The seller had the lawyer type up a (useless) letter demanding that the $300 item be returned and sent it to the buyer.
The buyers reported to ebay/paypal that they hadn't received their items. The buyer who received the demand letter then mailed a cheap toy to the seller. A week later the buyer sent the seller a letter containing the same wording as the letter that the seller had sent, demanding that the seller return the cheap toy. Needless to say, the seller's postings became quite livid at this point.
In the end the seller was out the $300 item and shipping costs, and both paypal transfers were canceled. One buyer received a $300 item as an unsolicited gift and the other buyer returned the $20 item to the seller (seller paid the shipping). I don't know what happened to the cheap toy.
Well, yeah, the glass used in CRTs contains quite a bit of lead.
My CRT Sony WEGA weighs over 200 pounds and I think that most of the weight is in the face of the CRT. This set requires a special TV stand just to hold the weight and there is NOTHING to hold onto when moving it. The old Sony TVs were rectangular boxes that had carrying handles, the newer ones are odd shaped round cornered blobs with no handles; the only flat parts are the bottom of the cabinet and the face of the CRT.
It pissed me off when the set was delivered. I had paid for in-house delivery and box removal, which the salesman said was supposed to mean that the TV would be unpacked and set in place. I live on the 2nd story of a condo with a significant number of stairs from the parking lot up to the common door of the condo. I would have been happy if the set had been carried up the stairs and left in my living room, still in the box. I took the day off of work to be home when it was delivered. The delivery truck driver arrived by himself, with no helper.
The driver told me that the warehouse didn't know that the set weighted so much so they didn't send a helper and that either I had to help him carry it up the stairs or he would leave the set at the curb. I called the store that I bought it from and was told that the delivery was my responsibility and that they had just arranged it for me. I called the delivery company and was told that they didn't have anybody to send out to carry it in and that they would refund me the difference between curb side and inside delivery. I was also told that if the driver helped me carry to it upstairs that I wouldn't get the $15 refund. If I refused delivery, I would have to pay for the delivery attempt, pay for storage, and pay again for another delivery. I helped the driver carry it upstairs.
I talked to a lawyer about it and was told that I was out of luck; the law was on the side of the cartage company and the retailer was totally out of the loop, they had simply acted as my agent to arrange delivery.
I admit it, I now have more gadgets drawing current than I did five years ago. I have also reduced power consumption in the past five years. Five years ago, my typical electric bill was US $125 a month, it is now in the $75 range. None of the changes have caused any hardships or reduction in quality of life.
1. Replaced heat pump with a more efficient model and installed set back thermostat. I lucked out, the compressor crapped out and I had a service policy. The impact on quality of life is nil, I had to learn the new thermostat.
2. Replaced refrigerator with a more efficient model. It was expensive but the old refrigerator was about 30 years old and was reaching the end of it's service life. It is a nicer refrigerator than the old one and it is quieter.
3. Replaced commonly used light bulbs with compact fluorescent. This was an inexpensive change and it had the most impact on quality of life. The color and light quality of the new compact fluorescents compares to the old lights but they take a few minutes to produce full light output. They remind me of a tube type radio warming up.
I think that the most interesting replacements were the night lights. I replaced the 6 night lights that used to draw about 4 watts each with LEDs. I connected a wall wart to an unused wire pair in my home telephone wiring and I use the phone wiring to transport power to my night light LEDs. I had the wall wart, LEDs, and other parts in my junk box -- and they work great.
The light conversion is both saving power used for lighting and reducing the summer air conditioning load. Someday I might even figure out how long it will take to save any money by replacing those lights. The main light in the living room was a 300 watt halogen torchiere which I replaced with three fluorescent flood lights which cost $35 for a new floor lamp and bulbs, rated power consumption went from 300 watts down to about 75 watts; and I frequently don't turn on all three of the bulbs. This summer I noticed that the living room was much cooler with the new lights. The kitchen is saving a similar amount of watts but the lights in the kitchen are not used very often.
The cure to this problem is for you to use your ISP's mail relay (or any other mail server that isn't using a dynamic IP address; which is usually residential grade internet service). I run a mail server for a rather large company and the server is configured to reject SMTP connections from dynamic IPs, which prevents quite a bit of spam -- and the sender is aware that the mail has been rejected.
Although you are included, I wasn't speaking of you personally, I was speaking of the people of Ohio.
As an Illinois resident, you should be outraged that the state government got itself in the position of having to pay the winning side's legal fees.
It was an outrageous law that the people of Illinois should have objected to.
HUH?, that's not even wrong. The chrominance signal is used by NTSC, PAL, and SECAM. The chroma signal is a subcarrier that contains the chroma information for the picture. They are not really separate signals, the chroma subcarrier just provides additional video information for those receivers that can use it. The information carried by the chroma subcarrier is totally useless without the video carrier.
I could respond to the Earthlink email challenges, but I won't. I no longer send any mail to Earthlink addresses because of this.
Is NIST any more independent than the other agencies (and their scientists) that have been pressured by the Administration to toe the Christian Right Republican Party Line?
"(and mp3.com doesn't exist anymore)"
mp3.com exists again (www.mp3.com) and it is now part of CNet. It offers free mp3 downloads from new artists and full track streaming audio new releases from established artists.
Telecommunications tax (or monopoly) on telephone calls is likely to be considered to be one item by the government. If it is a tax issue, it is not unusual for telephone calls to be taxed, and some governments consider VoIP to be evading taxes. Although in India's case they may killing a golden cash cow because this is going to raise costs to their outsourcing industry.
This whole article assumes that Google exists for the convenience of websites -- it doesn't. Google exists for the convenience of USERS who, as a group, view advertisers' paid links. As a user, I don't give a shit if Google notifies website owners about their reasons for delisting.
It's too late for SCO to cut their losses and bow out. IBM has counterclaims that they won't drop and probably won't even settle. I don't remember the details, but I believe that SCO could have criminal liability if they drop the case now. I believe that IBM could ask the court to require that SCO pay their legal expenses, which would severely cripple SCO, and possibly wipe them out.
I gave my mom and dad a new turntable last Christmas, they are in their 70's and love the music on their old records. They have a nice stereo system with a 200 CD player, that they also use.
I am in my 50's and used play LPs all of the time. Every time an LP is played, the music quality is degraded just a bit more. LPs and turntables are also a royal pain in the ass to use and maintain.
I used to have high end turntables and a few hundred LPs. I tossed or gave away the turntables and most of the LPs well over 10 years ago. I stored maybe 20 LPs that I thought that I might want to listen to again, and they will be trashed whenever I get around to cleaning out the storage unit.
The very last of my LP collection will soon follow my cassettes, reel-to-reel tape, and video disk collections into oblivion.
I used to work for a long distance company that used to guarantee 99.9% availability for DS1 circuits, which sounded good at the time. Most customers didn't realize that guaranteed 99.9% availability meant that there could be over 8 hours of outage during a year.
There are many possible sources of odor in a new house, treated lumber should not be one of them. The lumber used in framing houses is not normally treated, lumber on decks and some other outside parts of a house are treated to prevent insect damage and rot. Chemical adhesives are used in making plywood and particle board, both of which are common in new houses. Adhesive is also used in the construction of houses. One major item in new houses that contribute to the odor is the carpet. Many interior finishes have an odor, especially vinyl wallcovering. Window blinds and fabrics also have odors.
KDE, Gnome, and many of the other "Linus applications" will work just fine under other OSSs, including BSD and Solaris.
No, there are some other women who were über geeks. Heddy Lamar, who co-invented the first form of spread spectrum, has been mentioned.