Thanks, Grant.  Without being specific, it was an edition that came out before the year 2010.

RTO and RPO are definitely good points to bring up.  I know the data is critical, but i don't know for how long.  For example, must be maintained for one year, five years, indefinitely: I don't know yet, I also don't know how far back the data goes.  I suspect it's not very active transactionally, i.e., more data is added but not often changed.  Again, I don't know for certain.
I think their data cycle is an event happens occasionally that spurs a very large number of inserts, then it goes kind of quiet as analysis is done.  I suspect no data is ever deleted from the DB, though they might archive out old events to repository databases.