Here is another thread on CIFS issues and potential workarounds
Here is a great thread on how a person reported fixing a problem 500.19 error NetBios command limit and using a UNC based content architecture.
Check out the UNC tag regarding others that have great information.
Microsoft MVP – IIS
Here is the syntax to capture a memory dump using adplus (part of the debugging tools). FYI if you need to capture a ultra large w3wp process, you will need to increase the ping timeout inside IIS so the dump doesn’t fail. IIS will detect a ping failure, and recycle before the memory dump has finished writing to disk. I’ve used this since IIS DebugDiag doesn’t work on 64 bit of windows server 2008.