In a clustered environment when enumerating the Exchange Information Stores MessageStats Identifies the wrong node as the active node.
with the following warning in your "Exchange Information Stores" task.
An error occurred in finding the file, \\ServerName\Path_To_edb_file. The file may not exist or the current user does not have rights to the file.
Time:2011-01-27T23:02:01.712Z
Component:Exchange Information Stores
HR:
EventID:{8B504CE7-0524-49A1-B403-50555025A88C}
The Cluster Service is still running on the passive node.
Fail the Cluster Service over to the Active Node.