DayZ question and thoughts

[espiritujo]

So I've been looking lately at videos of the Day Z mod on youtube. If anyone doesn't know what I'm talking about, its the zombie mod for Arma II for Windows. I was wondering some of your opinions on it. Do you think the gameplay's longevity of it is worth partitioning my hard drive and installing Windows 7 so I can play this game? It seems like an amazing concept, but I feel like after a while, the gameplay can seem to get a bit boring and lackluster. Also, is there a single player mode? I know there arent any missions, but I mean is there a way I can play without having to be in an online server? And if you leave an online server, when you rejoin do you start out with the equipment that you previously had before you disconnected? I know when you die, you lose all your equipment, but what about when you disconnect?