Number of processors in Hyper-V manager greyed out RRS feed

  • Question

  • Hi, in our organization we are running virtualized SQL server on failover cluster (2 nodes). For performance issues I wanted to increase number of virtual processors withing hyper-v manager only to find its greyed out. The machine was shut down, yet the option remained unchangable (screenshot is from running server). There are two NUMAs set up, see attachments. Any ideas why is the option greyed out? How can I change number of virtual processors to lets say 8?

    Sorry cannot paste screenshots:


    Thursday, August 29, 2019 12:10 PM

All replies

  • Your screen shot says the VM was running.  Was it still shutting down?  That would be the most likely cause.

    Are you sure you're performance issue is CPU related?  Adding more cores when a VM doesn't need them usually decreases performance vs increasing it. 

    If you need more help, please post in the Hyper-V forum here: https://social.technet.microsoft.com/Forums/en-US/home?forum=winserverhyperv&filter=alllanguages

    Thursday, August 29, 2019 9:16 PM
  • Yes the WM was shut down. As I mentioned, screen shot was from funning server. I'm not certain but I have consulted with expert who says my issues to be CPU related.
    Monday, September 2, 2019 5:56 AM