This sounds nice, but makes zero sense. Direct short will be fused and isolated, otherwise UPS banks would get damaged (maybe even explode).

Edit, and reading further there it is:

>"If there was a ground fault in the facility, the impacted branch circuit breaker would open and the rest of the facility would continue to operate on generator and the servers downstream of the open breaker would switch to secondary power and also continue to operate normally. No customer impact."