On Sun, Jul 18, 2010 at 02:37:54PM +0200, Jörn Nettingsmeier wrote: > it can't be totally sealed, as that would require an expensive > gasket. my guess is that the way servers are designed, air is drawn > in through the front (the "cold aisle" in datacenter lore), and > expelled through the rear (the "hot aisle"). after some years of > use, it's not so unlikely for gunk to accumulate pretty much > anywhere in the path of the airflow. > and the conductivity of pure industry-strength gunk should never be > underestimated.
Yes, dust will accumulate everywhere. But this switch was well outside the normal airflow paths, and the outside was clean. The 'dirt' was indeed a thin film, as Gene suggested. The machines are configure to reboot after a power failure, but not if they think they have been switched of manually, which was what happened. Meanwhile the second ADI-648 power supply has gone, as the first one during a night with several city-wide power cuts. I'm not really impressed by that very big UPS. Or there is something wrong with its installation. Ciao, -- Je veux que la mort me trouve plantant mes choux, mais nonchalant d’elle, et encore plus de mon jardin imparfait. (Michel de Montaigne) _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
