On Fri, 22 December 2000, Jimmy Kyriannis wrote:

While we're on the topic of small devices... What are folks' experience with SNMP-manageable environmental sensors for temperature, humidity, electrical variations, etc., for remote monitoring of data closets, comm rooms, enclosed racks, etc.?

There are a whole gaggle of them, ranging in price from $200 to $20,000. Each have their own quirks and monitor different things. Everyone does temperature, most do humidity, few do electrical. With dry or wet contacts you can connect additional devices such as door ajar, smoke or leak detectors. Standalone units Liebert sitenet integrator: http://www.liebert.com/ Nbase-Xyplex enviromental manager: http://www.nbase-xyplex.com/ NetBotz: http://www.netbotz.com/ Sierra Monitor environmental controller: http://www.sierramonitor.com/ Versalynx environmental monitor: http://www.versalynx.com/ I have my preferences, but in most cases I needed to add some additional sensors using a few dry contacts or analog inputs. There are also a number of units integrated with some other piece of equipment (e.g. a UPS) or require an additional PC to run the SNMP agent software. What I find interesting is very few people have any type of environmental monitoring, and even fewer monitor the sensors they do have by any operation center. Maybe I'm just weird, and used to monitor too many things too closely. Besides the temperature of their cisco router, do people regularly monitor other environmental parameters in their POPs?