MOM 2005 Staggering Discovery
If you have multiple management servers in the same time zone, which are members of the same management group and have noticed that your SQL Server is getting over taxed during the discovery process, stagger the times when your management servers run discovery. In the MOM Admin console under computers -> management servers right click a management server and select properties. Click the discovery tab and uncheck the use global settings button and change the time when discovery is run by like an hour before, so one management server will run discovery at 1 am the other management server will run discovery at 2 am.