You can use the procedures in this section to temporarily change intervals during a customization or when making significant storage environment changes. You can also use the following procedures to reduce network traffic and increase network performance for your specific storage environment:
Disabling performance data collection
Changing discovery interval overrides
Changing monitoring interval overrides
After changing intervals and each time you make changes to your overrides and customizations, export and save a copy of the EMC.SI.Customization.xml file as a backup of your customization values. If you lose a needed customization, you can import this backup copy to recover your specific customizations.
How to Monitor Using Overrides on Microsoft TechNet provides more information on creating overrides.