It's not always the cleaners
I was a newish Tech Support Manager running an established DC where we were getting unexpected disk failures.
Its environmental said my mainframe supplier, when were the floor and roof voids last cleaned. The response from the ops team was 'never' I paid about 10K to get that done.Fantastic not only that mainframe but all the other systems but one became more reliable.
For some reason I had to be in the office at 6:30 one morning so popped into the DC to check everything was OK. leaning against the one system with problems was the ops team leaders bicycle. It turned out when it rained on the way to work he liked to bring it into the DC to let the AC dry it off. Needless to say the AC was also sucking road grit off it and recycling it through £250,000 worth of disk array. One rather shouty conversation later we had another line added of things not to be brought into the data center. Believe it or not the bottom 2 lines above bicycle were Fireworks & Rocket Motors.
Biting the hand that feeds IT
