[hnlmorg]

Well said! This echos my, admittedly somewhat limited, experiences as well.

I remember one mainframe I supported, there was an explosion on the same block which took out most of the buildings in the area. It was bad enough that the building which housed the mainframe was derelict. But that mainframe chugged along like nothing happened. I can't remember what hardware nor TSS it was running but I woul guarantee that none of the platforms I've supported since would have faired nearly as well (though I did have some SPARC boxes in one company that survived more than 10 years continual use and zero downtime -- they were pretty special machines too).