I recently picked up an HP Dl180 G6 2U server off ebay for a bargain price. It's got 12xLFF drive bays and will hopefully make a perfect media server. The only problem with it is the noise - it's fans run ridiculously loud. The HP BMC that controls the fan speed is locked down so having done *a lot* of reading round it seems my only option is to add some sort of physical fan controller to override it and reduce the speed. The system always errs on the side of caution and as a result the fans never drop below 50%. They're Sunon 60mm (8 in redundant mode, I've stripped it back to 4 currently) which I believe top out at about 10k rpm. I can literally here this server from the other side of the house on a warm day... The system uses PWM controlled fans and I'm at a loss at the moment to know how to do this.
Having read some other threads on here and elsewhere it looks like I need a PWM fan controller, perhaps one based on an NE555 chip? I've seen some ready made widgets on eBay that might do the job and also some people on here that have built one. Ideally I'm looking to buy one ready made rather than relying on my own amateur soldering skills!
Here's one I saw on eBay but am not sure if it would work: http://www.ebay.co.uk/itm/162162541393?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
Any tips or suggestions welcome.
Having read some other threads on here and elsewhere it looks like I need a PWM fan controller, perhaps one based on an NE555 chip? I've seen some ready made widgets on eBay that might do the job and also some people on here that have built one. Ideally I'm looking to buy one ready made rather than relying on my own amateur soldering skills!
Here's one I saw on eBay but am not sure if it would work: http://www.ebay.co.uk/itm/162162541393?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
Any tips or suggestions welcome.