Maybe you looked at Schroeder and Gibson from Fast07, which looks at MTBF calculations. They have lots more data, but none released. Hard drive failures are an easy example of the use of the concept of hazard to examine probability distribution functions. I'm not teaching this now, but I sympathize with the difficulty of finding good datasets. Who knows? If you group data by pod, or even location in datacenter, there could be something interesting in exploratory analysis.