What will be problem if current enviornment replace with Windows Cluster (2 nodes)

 Hi,

I have the following scenario and appreciate to have extensive discussion on it and sharing of knowledge.

  

The scanerio is as follows;

Currently Oracle 11g Release1 is installed on one server. During the Oracle server installation and database creation, all the database and oracle server files were stored on shared storage (i.e. not local drives of Windows 2003 enterprise edition SP2). The server is now live with application and different transaction are running.

 

Now, the criteria of client is, they are planning to make changes in Windows Architecture....i.e. they are going to arrange one more identical new server and planning to have Windows 2 nodes clusters on it.