does not mean that the ips has the capacity to support it....
Say we have a community with 2000 homes all with their own switched 100Base-T connection to the net. Before the end users even see the load, the isp servicing these homes would be toast. They would need a 25Gb connection to the net to allow all of these users to go all out.
Given the cost of that sort of connection, chances are that the cable company/isp/whatever would get one or two OC-3's (155Mb if I remember correctly) which would result in a 1:1290 over subscription of the bandwidth. They would still have a 0 CIR for their connection.
they are selling them potential (much like 10Mb cable modems today) Not reality.
From my experience in the past few months with sun's equipment, I've had a number of failures with the cpu modules.
I have about 15 of the systems at a customer site and another 15 an exodus. There have been no problems with the systems at exodus, only the ones sitting in the customers poorly vented and overcrowded equipment room. Of course the ambient temperature at exodus is such that a jacket is often required if you intend to stay for long...
From the line about also checking the customers installation environment, my guess would be that the majority of the issues are that they chips are failing when put under environmental conditions that are near their posted maximums.
People tend to forget that when you rack mount a server, you have to pay close attention to the airflow to that server. Sun's 4x00 series of systems are rather strange in that the airflow is right to left, not front to back, so you cannot put a 4x00 system into a 19" rack and expect it to work correctly simply due to the airflow issue. (This is why Sun's 5x00/6x00 come is such a strange looking rack with all of that empty space on the left... )
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does not mean that the ips has the capacity to support it....
Say we have a community with 2000 homes all with their own switched 100Base-T connection to the net. Before the end users even see the load, the isp servicing these homes would be toast. They would need a 25Gb connection to the net to allow all of these users to go all out.
Given the cost of that sort of connection, chances are that the cable company/isp/whatever would get one or two OC-3's (155Mb if I remember correctly) which would result in a 1:1290 over subscription of the bandwidth. They would still have a 0 CIR for their connection.
they are selling them potential (much like 10Mb cable modems today) Not reality.
From my experience in the past few months with sun's equipment, I've had a number of failures with the cpu modules.
I have about 15 of the systems at a customer site and another 15 an exodus. There have been no problems with the systems at exodus, only the ones sitting in the customers poorly vented and overcrowded equipment room. Of course the ambient temperature at exodus is such that a jacket is often required if you intend to stay for long...
From the line about also checking the customers installation environment, my guess would be that the majority of the issues are that they chips are failing when put under environmental conditions that are near their posted maximums.
People tend to forget that when you rack mount a server, you have to pay close attention to the airflow to that server. Sun's 4x00 series of systems are rather strange in that the airflow is right to left, not front to back, so you cannot put a 4x00 system into a 19" rack and expect it to work correctly simply due to the airflow issue. (This is why Sun's 5x00/6x00 come is such a strange looking rack with all of that empty space on the left... )