Been there done that? Circa 2001 I had a customer with a rack of 220R's and Clariion storage arrays. I was paged about an app outage and saw (IIRC) "environmental errors" in the logs about the temperature of the machines. One of the Clariion's, in the same rack, had caught fire which brought the database / app down but the 220R's kept chugging along. Unsurprisingly this was quickly followed a call from the NOC that the fire suppression kicking in and that I should down get there ASAP.
Take a look at https://revenium.io (full disclosure: I'm co-founder/cto.) We are a fully hosted solution with a free/developer tier and plans that start at $19/month. We also have a self-hosted option.