Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!bywater!dagobah!mis From: mis@Seiden.com (Mark Seiden) Newsgroups: comp.protocols.tcp-ip Subject: Re: Network Temperature Protocol Message-ID: <3560@dagobah.UUCP> Date: 25 Jul 90 18:50:18 GMT References: <9007210040.AA28109@ucbvax.Berkeley.EDU> <1990Jul23.201937.6154@wrl.dec.com> Organization: Seiden and Associates, Inc, Stamford, CT Lines: 55 kmeyer@wrl.dec.com (Kraig Meyer) writes: >In article <> J.Crowcroft@CS.UCL.AC.UK (Jon Crowcroft) writes: >||As part of a distributed computing experiment, we are considering >||setting up a Sun workstation, with a bi-metallic strip and small coil >||tempearture device, and providing a network wide reading, combined >||with time of day service and cartesian location data. >The idea of being able to find out about a network node's environment >has some good network management potential. Back when I was at Merit >helping build the original Merit nodes, we started to design a module >which would sense temperatures in and and nearby the processor cabinet. >The idea was that an alarm in the NOC would sound when the temperature >was outside of an appropriate range, and the NOC could call a human to >either turn up the A/C, plug in a fan, or turn the node off. whether you want the temperature of your cpu board or the room temp is open to debate. i believe that large disks with motors and big power supplies are the things which generate the most heat today. anyway you can place the sensor within a reasonable distance of the gadget (20 ft) using an ordinary radio-shack type extension cable... anyway such a gadget is commercially available... Subject: /dev/thermometer want to monitor the temperature in your machine room? run a shell script if a certain temperature is exceeded, or a particular rate of temperature increase is exceeded? there is now such a gadget .. wiztemp-1. -40 C through 88 C with .5 degree C resolution (that's 8 bits...) chart recording software (c and postscript) furnished in source. out of range conditions reported in a user-configurable fashion. small package, connects to serial port (of sun, mac, pc, many unix systems) -- velcro it to the side of your machine... costs $250 including software. avoiding one meltdown could easily justify the cost... 2 yr mfrs warranty, 30 day money back guarantee. available from Seiden and Associates, Inc 16 Woods End Rd Stamford, CT 06905-2727 203 329 2722 mis@seiden.com -- mark seiden, mis@seiden.com, 1-(203) 329 2722 (voice), 1-(203) 322 1566 (fax)