~9TB? Not bad. I'm still sitting at just ~7TB local storage, but mine is all in one array, a bit easier to handle.
Is that your original created data or illegitimate data from something that you don't own the copyright to and have not incurred the expense and time to produce? I can't afford to lose data (i.e., for more than a few hours) so I don't risk the use of arrays. There are at least three copies of the data, one of which is off site.