Oracle recommends that you complete these tasks as needed after installing Oracle Grid Infrastructure.

• Updating the Oracle ORAchk Health Check Tool
  Update the existing version of your Oracle ORAchk utility to perform proactive heath checks for the Oracle software stack.
• Optimize Memory Usage for Programs
  The Windows operating system should be optimized for Memory Usage of 'Programs' instead of 'System Caching'.
• Create a Fast Recovery Area Disk Group
  You should create a separate disk group for the fast recovery area.
• Checking the SCAN Configuration
  The SCAN is a name that provides service access for clients to the cluster. You can use the command cluvfy comp scan (located in Grid_home\bin) to confirm that the DNS is correctly associating the SCAN with the addresses.