Hadoop? Cray? 
Is that for one second, one minute, all day every day?
How many tags do you have? I know Kyle has posted about processing 27,000 changes a second. 160,000 changes a second would take a lot of processing power.
You might have to break it up. ie: have multiple history dbs each of which handle some of the total tags.
Let’s us know if you get it working and what it took. The IA guys will want to use it for marketing 