Hi, I've been auditing our db server using the articles on this site. I'm running sqlserver2005 raid 1 with a scsi controller and I noticed that I got extremely high values for Physical Disk: % Disk time. I was very confused about the high values but then I read the forums here and one of users said that the % Disk time perfmon counter is useless if you are using scsi. I then started to wonder if there's another counter that could be useful. Looking at this microsoft article : http://support.microsoft.com/kb/310067. It says that Physical Disk: % Idle Time is useful. If that's the case does anyone have a good idea what values the % Idle Time counter should average and not exceed? Thanks.