eetfukk420
01-22-2007, 05:26 AM
This is a project near completeion, that has been in the planning phase for over a year now, I am posting it to the cooling thread and the Q & A thread since it kind of applies to each on a certain point of view. hopefully the nit pickers can minimize the flames as for I am trying to get the best ammount of replies in a short ammount of time. Thanks in advance for your understanding.
I have a residential enviornment with 12 drops run to various points, they all tie into a double gang wall plate in a closet in one of the rooms (my room). I purchased a Cisco 2924 WS-C2924C-XL-EN 24 port enterprise switch for a decent price ($135 shipped http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=ADME:B:EOIBSAA:US:11&Item=200061843417 ) and a Cisco 2611 Router maxxed out on all ram ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=ADME:B:EOIBSAA:US:11&Item=170068403935 ) . To make the job look neat I got a 2U wall mount bracket here http://www.racksolutions.com/wall-mount-rack-brackets.shtml Today the pieces finally went together and I have encountered a speed bump.
When the Router/Switch were mounted in the bracket to the wall a steady vibration sound is humming on the other side of the wall. The router contains a single 60mm x 60mm x 25mm that is aimed out the bottom of the device. That device alone puts off very little "vibration" sound to the other room. But when the beastly Catalyst Switch goes into the rack, the 3 40mm x 40mm x 20mm fans work together to produce the end product of a vibration that will get me on my parents $*%t list indeffinately.
I've jumped through a buncha hoops over the past few weeks getting everything together that I've needed to instal this the rightway. I will admit this is a complete overkill of a home neworking project, but its something I've always wanted to do. So at this point I refuse to give up.
I did a bit of googleing and found an interesting solution. Sunon makes a fan that is a new design concept. At least to me it is, I know according to my research this fan has been in exsistance since at least the year 2000. It operates on a magnetic levitation concept in that being there is very low vibration emitted by the fan. Here is the link google gave me that brought this fan to my attention: http://www.cyberguys.com/templates/searchdetail.asp?productID=3266&core_cross=SEARCH_DETAIL_COMPARISON Due to the lack of specs on that page tho I had to read the PDF version of the manufacturers specs here: http://www.sunon.com.tw/products/pdf/maglev.pdf the 40x40x20 fan is on page 18. I have never used these fans before so to me its a shot in the dark on wether it will solve the problem of the vibration.
I know the switch itself is at least 6 years old by the manufacture date on the label on the cover. So it is highly possible that replaceing with normal ball bearing fans could suffice as to the vibration problem. I plan on also swapping out the fan in the router with the same style of fan that i am putting in the switch. I need to know if anyone is familiar with those style fans, and if they live up to the advertised "virtually no vibration".
In conjunction to swapping out the fans I also plan on Buying some longer mounting screws that will fit in the cage nuts on the rack and buying some tight fitting rubber "O" rings. With a longer mounting screw it will allow me to put 2 rubber "O" rings on each screw one being between the wall mounted rack and the bracket on each device and another "O" ring between the device bracket and the screw head. hopefully it will create the effect of no metal on metal contact between the network device and the bracket. And hopefully eliminateing the vibration.
By the way I forget to mention 2 of the screws that are in the bracket, go straight into a stud on the wall, so it is possible that the vibrations being transfered from the devices, to the rack are going straight into the stud and are being amplified by the stud. I did stop at Kmart tonight since Home Depot closes at 7 on sundays here in search of rubber "O" rings, couldnt find any, but what i did find is a felt pad that i cut in half and rigged as a spacer in between the wall and the wall mounting rack bracket itself. I couldnt really tell a difference in the vibration, I did notice that it still exsisted.
I'm no expert in acoustics by any means, but I do know from watching alot of Discovery/Millitary channel that the U.S. Navy gets their submarines to run so damned quiet by putting rubber grommets on damn near every metal on metal contact point in the ship. I would like some opinions on the path of action I am chooseing at this point, I am even thinking of "O" ringing all the connection points of the switch with the new fans to reduce the vibrations even more.
Any feedback anyone can provide me, who has been in and/or tackled the same project im in and sucseeded let me know. If anyone has any kind of knowledge about this subject will also be greatly appreciated. I just wanna get this switch in and not have to admit defeat and buy a different switch...
I have a residential enviornment with 12 drops run to various points, they all tie into a double gang wall plate in a closet in one of the rooms (my room). I purchased a Cisco 2924 WS-C2924C-XL-EN 24 port enterprise switch for a decent price ($135 shipped http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=ADME:B:EOIBSAA:US:11&Item=200061843417 ) and a Cisco 2611 Router maxxed out on all ram ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=ADME:B:EOIBSAA:US:11&Item=170068403935 ) . To make the job look neat I got a 2U wall mount bracket here http://www.racksolutions.com/wall-mount-rack-brackets.shtml Today the pieces finally went together and I have encountered a speed bump.
When the Router/Switch were mounted in the bracket to the wall a steady vibration sound is humming on the other side of the wall. The router contains a single 60mm x 60mm x 25mm that is aimed out the bottom of the device. That device alone puts off very little "vibration" sound to the other room. But when the beastly Catalyst Switch goes into the rack, the 3 40mm x 40mm x 20mm fans work together to produce the end product of a vibration that will get me on my parents $*%t list indeffinately.
I've jumped through a buncha hoops over the past few weeks getting everything together that I've needed to instal this the rightway. I will admit this is a complete overkill of a home neworking project, but its something I've always wanted to do. So at this point I refuse to give up.
I did a bit of googleing and found an interesting solution. Sunon makes a fan that is a new design concept. At least to me it is, I know according to my research this fan has been in exsistance since at least the year 2000. It operates on a magnetic levitation concept in that being there is very low vibration emitted by the fan. Here is the link google gave me that brought this fan to my attention: http://www.cyberguys.com/templates/searchdetail.asp?productID=3266&core_cross=SEARCH_DETAIL_COMPARISON Due to the lack of specs on that page tho I had to read the PDF version of the manufacturers specs here: http://www.sunon.com.tw/products/pdf/maglev.pdf the 40x40x20 fan is on page 18. I have never used these fans before so to me its a shot in the dark on wether it will solve the problem of the vibration.
I know the switch itself is at least 6 years old by the manufacture date on the label on the cover. So it is highly possible that replaceing with normal ball bearing fans could suffice as to the vibration problem. I plan on also swapping out the fan in the router with the same style of fan that i am putting in the switch. I need to know if anyone is familiar with those style fans, and if they live up to the advertised "virtually no vibration".
In conjunction to swapping out the fans I also plan on Buying some longer mounting screws that will fit in the cage nuts on the rack and buying some tight fitting rubber "O" rings. With a longer mounting screw it will allow me to put 2 rubber "O" rings on each screw one being between the wall mounted rack and the bracket on each device and another "O" ring between the device bracket and the screw head. hopefully it will create the effect of no metal on metal contact between the network device and the bracket. And hopefully eliminateing the vibration.
By the way I forget to mention 2 of the screws that are in the bracket, go straight into a stud on the wall, so it is possible that the vibrations being transfered from the devices, to the rack are going straight into the stud and are being amplified by the stud. I did stop at Kmart tonight since Home Depot closes at 7 on sundays here in search of rubber "O" rings, couldnt find any, but what i did find is a felt pad that i cut in half and rigged as a spacer in between the wall and the wall mounting rack bracket itself. I couldnt really tell a difference in the vibration, I did notice that it still exsisted.
I'm no expert in acoustics by any means, but I do know from watching alot of Discovery/Millitary channel that the U.S. Navy gets their submarines to run so damned quiet by putting rubber grommets on damn near every metal on metal contact point in the ship. I would like some opinions on the path of action I am chooseing at this point, I am even thinking of "O" ringing all the connection points of the switch with the new fans to reduce the vibrations even more.
Any feedback anyone can provide me, who has been in and/or tackled the same project im in and sucseeded let me know. If anyone has any kind of knowledge about this subject will also be greatly appreciated. I just wanna get this switch in and not have to admit defeat and buy a different switch...