In banking industry it brings up security concerns. We were in the exact same situation, however using SAS+SPDE with some custom SAS and tsql queries. Our database was merely 100TB, still it was a nightmare to assure stable performance thoroughly, because SPDE could not properly handle SMT. After having 24h++ daily flow processing times, the managers have decided to rent a 6 years old IBM power 7 with dedicated processor cores, which eventually have truncated the processing time down to 15 hours. This was a time limited contract, for 6 months. I've left the company in a short while, but this made the managers to rethink buying a more up to date server, so now the daily processing flows now are around 11,5h. Long story short, sometimes a little architecture optimization does the trick.