When connecting to Exchange 2007 server from Diagnostic Console, warning message appear SOME2k7Proxy failed to collect table: Storage Group
Windows firewall on the Exchange2007 Server is blocking Windows Management Instrumentation (WMI) connection.
RESOLUTION 1:
Allow WMI connection on Exchange 2007 servers Windows firewall.
RESOLUTION 2:
Disable Windows firewall on Exchange 2007 server.