While working with one my customer realized that his exchange 2010 nodes were remove from DAG membership on on VMWare ESX.
Went through two blogs by John Marlin and Kevin Ledman from Core team and it seems really helpful.
Articles to approach the issue:
VMware also has an artile which speaks about the issue and resolution:
I feel this will be helpful while addressing this type of issues.
very helpful info(in all the blog posts)
Great article... Thanks!