On 28/02/2010 14:55, Graham Wooden wrote: > The AC unit in my little datacenter room was recently upgraded/serviced. > Since then I have started to monitor the my 6500's temp. I have been > noticing a swing in the RP in/out on a Sup32 going from 37c to 39c and then > back to 37 within 30-40 minutes timeframe. Room temp seems to be stable > right at 25c, all the time. > > Are these safe swings? Or are these too dramatic only to shorten the life of > the box this much sooner. Unfortunately I don't have any previous history > data on the sups, only the room.
2C shifts should be ok. Intel did some interesting research on this a couple of years ago. You can read / watch a summary of it here: > http://www.intel.com/it/pdf/Reducing_Data_Center_Cost_with_an_Air_Economizer.pdf > http://video.intel.com/?fr_story=2d6e0fbbef76b72c6119cc7fe7889bba20cb5192&rf=bm synopsis: a production server room hosting 450 server was operated for 10 months using outside air cooling measured temperature fluctuations of 18C to 33C, and humidity from 4% to 90%. Ambient dust was prevalent. Server failure rate over the 10 months was 4.46%, compared 3.83% in the control configuration (a standard DX air-conditioned server room hosting the same server configuration). Nick _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
