The SBS monitoring database can be a pain. If left unmanaged and unloved it will eventually consume too many resources on the server, causing performance issues. To clearup the database, you can follow the details here:
The PS1 script is hosted on onedrive, so let me know if it disappears and I’ll see if we can recover it.
Extract the PS1 file to c:\windows\temp\, check to ensure the script isn’t blocked and that script execution is enabled.
SBS2008 – Open an admin powershell prompt, and run the script
SBS2011 – run “c:\program files\windows small business server\bin\movedatapowershellhost.exe” as administrator, and then run the script.