A new version of this MP has just been announced. Check out the information on changes and where to download it from here.
Microsoft has confirmed this is a bug and have pulled this new MP version. The old version (6.0.7292.0) of the Windows Server OS MP has been made available for download again and if you're currently in the process of deploying a new SCOM environment, then I'd suggest using this version for now until the bug is fixed. You can download the old MP from here.
A few days ago, Microsoft released an update to their base Windows Server Operating System management pack (version 6.0.7294.0) that was supposed to fix a minor issue that the previous edition has (fix listed below):
- Fixed more performance collection workflows that were failing for mount points
However, one of my MVP friends (and SCOM MP Ninja) Daniele Grandini noticed a bug in this new MP during his own tests - below is what he has to say on it:
"The latest OS MP has a serious flaw when collecting disk performance counters. If you don’t want your DB bogged down with too many performance data points, stay away from it."
Now, I've run some tests in my own demo environment and can also see multiple discoveries for each logical disk so until I hear more from Daniele or Microsoft, I'm going to keep this MP out of my production environments - and I suggest you do the same too!
I've also just noticed that Marnix has posted something similar about this MP, so it's better to be safe than sorry in this case!
When I have more information, I'll update this post to reflect and if you're not yet following Daniele or Marnix' blogs, then get signed up via RSS ASAP (you could use the really handy OPML file that Stefan Roth has just released to help you along with this!)
Hope this saves people some time/sanity and hassle :)