I am leaving my beloved Japanese employer after 19 years......?

I had to give 3 months notice,which is fine by me, now they have decided to end my days not doing my normal tasks (systems analyst) but to land me with implementing and setting up a disaster recovery site. I havent a clue where to start, i have 8 good people working with me on this project , but they all seem to be a bit stumped. We have offices in Canary Wharf, London Wall and Cheapside. I do not think this is fair to put this on my shoulders, any body give me a heads up on where to start?