Just out of curiosity, how many pages long is this report? The largest single report I've seen was 80,000 pages -- and they used to print that monster out every week!
One of my past projects we would load a massive text file weekly, I think it was 200k+ pages of numbers, indexing with a date trigger and a floating trigger on one of the line items. It would take DAYS to index. Half the time it wouldn't even load. I can't imagine retrieval. I went to my friend on the business side of the house and he even told me .."Nobody is going to retrieve this"
I've also seen 50k+ metacode files that would be converted from Xerox, to AFP, then to PDF, at load time. This was not fun, especially when I had to migrate from Xenos to AFP2PDF. Ironically, Xenos loaded it way faster! It would take maybe 2 hours to index with Xenos, but with the whole new "Conversion process/Integration" it would 5-6 hours if not longer. Fun times.