Thanks for the Info guys, tried it the other night with a couple of friends...
Me on Sam friend on Mnk and another on Kclub drk 1 Brd a rdm and a whm ... we fucked up at the begining and we weren't ready.. got it down to 50% hp though with just the of us DD's(Kclub drk did about 40% of it and I didn't even get to 2hour). Apparently the Drk was only hitting him for like 100ish per hit, so I'd assume that it has around 25kish hp maybe 30.
XI Wiki

