Hi Everyone,
We are running Windows 2008 R2 domain controllers in with forest level also as Windows 2008 R2. We have 70+ domain controllers. Most of then are virtual running on VMware. Only the main data centers having exchange have physical domain controllers. This infrastructure is a upgraded one from Windows 2003.
From last 2 months many virtual domain controllers are facing unexpected reboots. There is no fixed DC or a pattern. We have configured Kernel Crash dump files to be generated but the crash dump files is not getting generated on any one of them.
The virtual Domain controllers have 2.5 GB RAM and Page file also as 2.5 GB. Even if I increase the Page file size issue is the same.
I used Notmyfault.exe tool from SysInternals to check whether a manual trigger generates a dump file. To my surprise the dump file was created successfully. I even tried different option in NotMyFault like IRP, Deadlock etc and in all occasions the dump file generated successfully.
We need to find the reason why our domain controllers are getting rebooted. Any help is much appreciated.
Regards,
ABHI