The Dell servers do the same thing. They have multiple redundant fans, that all turn on high speed (sound like a jet engine) during boot up but then slow down to a more tolerable speed/sound once the system boots up. If you work the sytems hard enough and the temp gets too hot, they will spin up to high speed for a while and then spin down again. I don't think I have seen anything in Windows or Linux that will allow for enterprise fan speed control. Quoting Andrew Zbikowski <andyzib at gmail.com>: > HP Proliant DL380 are loud even when it's controlling the fan speeds > properly. Actually all the HP servers I deal with are. Thankfully they > all live in the server room. > > From memory (the servers live in another state, so I haven't been on > site to reboot them for a few months) the fans spin up to full speed > when the server is powered on and then they slow down during POST or > OS boot. If you don't get a noticeable decrease in fan speed during > boot something isn't right. > > Fan speed should be an automatic thing that is controlled by temp > sensors on the mb or in the case that. I haven't run anything but > Windows Server 2003 on the HP servers we have at work so I can't be > sure that fan speed isn't OS controlled. > > Flashing to the latest bios and installing the most recent updates > from HP shouldn't hurt. > > -- > Andrew S. Zbikowski | http://andy.zibnet.us > IT Outhouse Blog Thing | http://www.itouthouse.com > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list >