> -----Original Message----- > From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of John R Pierce > Sent: den 24 december 2016 23:18 > To: centos at centos.org > Subject: Re: [CentOS] Noise Cancellation of Server Noise > > On 12/24/2016 1:57 PM, Digimer wrote: > > There are rack chassis designed to reduce noise. An example are the APC > > NetShelter CS line. > > > > http://www.apc.com/shop/ca/en/categories/racks-and-accessories/racks- > and-enclosures/netshelter-cx/_/N-1ks6cn2 > > wow, $9100 for the 38U rack. thats pricey... and that's before PDUs, > UPS, and all that other important rack mount stuff. This is what I use to get rid of that droning noise from the computers in my office, and also the ventilation. http://www.audio-technica.com/cms/headphones/1c7efaa15727a938/ -- //Sorin