As I stated in a different post.....The electron microscope used for verification has a machine attached to it that can give you a breakdown of the metals in a givne sample. Each metal gives off a unique reading. It was very obviously zinc and not steel.
NO.........We aren't stupid. My mom has been doing work with the electron microscope for more than 20 years now. you never re-use sample pads which is a standard rule when taking sample. Each sample was only used once and clearly marked where it was taken from so that they didn't get mixed up. In fact the power supply sample were taken a different day than the floor samples.
Hi, Another note about how the electron microscope came into play. My mom took sticky sample pads and stuck them onto the bottoms of the floor tiles and then put the sample pad in the scope. In addition, we took the same sample pads and ran them over the input fan shrouds of the dead supplies. In the case of the floor tile samples the whole thing is pretty much just zinc whiskers. In the power supply samples it is a mix of dust and zinc.
Hi,
It just so happens that I work with this guy and he his correct in his statement. In fact my mom is the electron microscopist on site. Please note this is a VERY OLD electron microsope. around 8 - 10 years old. It doesn't have the ability to look at the lattice structure of a molecule because it simply isn't powerful enough. In our case the zinc whiskers where in the hundreds of microns in size. There is an attachment to the machine that can give you a breakdown of metals in the sample you are analyzing. In our case it was very obviously zinc. We have had problems with our new Sun equipment popping power supplies for several months nows (V480, 420R, etc.) although none of the Ultra 2's have had a problem at this point. We thought it was heat and power (thus the new AC unit for cooling) and the power checked out ok. The sun rep said we are the only company we service that was having supplies pop (in fact the data center across the hall wasn't having any issues but they have different tiles than us) when we had the cleaning crew in to clean under the tiles (prep for the under floor AC unit...note that we are using ceiling air now) In the span of 3 hours during the cleaning we lost 13 supplies all on new sun equipment. Once they stopped running vacs and pulling tiles it dropped off.
Sun confirmed (with a sample of five dead supplies) that they were all caused by a short.
Our tiles were wood core with hot dip galvanizing that had been recycled from an old computer room. These tiles had 20 years plus of use.
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As I stated in a different post.....The electron microscope used for verification has a machine attached to it that can give you a breakdown of the metals in a givne sample. Each metal gives off a unique reading. It was very obviously zinc and not steel.
NO.........We aren't stupid. My mom has been doing work with the electron microscope for more than 20 years now. you never re-use sample pads which is a standard rule when taking sample. Each sample was only used once and clearly marked where it was taken from so that they didn't get mixed up. In fact the power supply sample were taken a different day than the floor samples.
Hi, Another note about how the electron microscope came into play. My mom took sticky sample pads and stuck them onto the bottoms of the floor tiles and then put the sample pad in the scope. In addition, we took the same sample pads and ran them over the input fan shrouds of the dead supplies. In the case of the floor tile samples the whole thing is pretty much just zinc whiskers. In the power supply samples it is a mix of dust and zinc.
Hi, It just so happens that I work with this guy and he his correct in his statement. In fact my mom is the electron microscopist on site. Please note this is a VERY OLD electron microsope. around 8 - 10 years old. It doesn't have the ability to look at the lattice structure of a molecule because it simply isn't powerful enough. In our case the zinc whiskers where in the hundreds of microns in size. There is an attachment to the machine that can give you a breakdown of metals in the sample you are analyzing. In our case it was very obviously zinc. We have had problems with our new Sun equipment popping power supplies for several months nows (V480, 420R, etc.) although none of the Ultra 2's have had a problem at this point. We thought it was heat and power (thus the new AC unit for cooling) and the power checked out ok. The sun rep said we are the only company we service that was having supplies pop (in fact the data center across the hall wasn't having any issues but they have different tiles than us) when we had the cleaning crew in to clean under the tiles (prep for the under floor AC unit...note that we are using ceiling air now) In the span of 3 hours during the cleaning we lost 13 supplies all on new sun equipment. Once they stopped running vacs and pulling tiles it dropped off. Sun confirmed (with a sample of five dead supplies) that they were all caused by a short. Our tiles were wood core with hot dip galvanizing that had been recycled from an old computer room. These tiles had 20 years plus of use.