Ever need to create a more detailed log for Windows 2008 failover clustering? Well, it became much easier for you. Just run the following command and then go into the directory C:\Windows\Cluster\Reports to get the cluster.log file:

cluster log /g /level:5

For more information, please read the link below:
http://blogs.msdn.com/b/clustering/archive/2008/09/24/8962934.aspx