Hello, When using perfmon to look at the performanc object 'MSExchange Database' shows three instances "edgetransport", "Information Store" and "Microsoft.Exchange.Cluster.Repl". The corresponding WMI performance class is Win32_PerfRawData_ESENT_DATABASE and when I query that via WbemTest or browse for the class using the WMI Tools CIM Studio, the only instance it shows is "svchost" (an instance not even shown by Perfmon) or no instances at all. This has been verified in at least three Windows 2008 environments. I have run winmgt /resyncperf multiple times, rebooted the machines, etc. and still the same results. Why the discrepancy? Thanks, Matt