The Exchange Server Best Practices Analyzer will use the following resources on the computer on which it is running:

• 5 to 10 megabytes (MB) of RAM for each server that the tool scans
  
  
• 50 to 75 percent CPU during the scan of the Exchange organization
  
  
• 0.5 to 2 MB of disk space used for extensible markup language (XML) data
  
  

For more information about choosing which computer to install and run Exchange Server Best Practices Analyzer on, see Installing.

Exchange Server Best Practices Analyzer will use the following resources on the Active Directory server:

• 25 to 50 percent CPU during the time that the tool accesses the Active Directory server
  
  

Note:
The tool will access the Active Directory server sporadically, with each access interval lasting an average of 10 to 15 seconds. The interval will be longer on very large Exchange organizations.

You will not notice any significant performance degradation on the Exchange servers while the Exchange Server Best Practices Analyzer scans the organization.

Note:
The time that the tool will take to gather data from an Exchange server will vary depending on the load on the Exchange server and the network speed. On slow networks, the tool will take an hour or more to gather data. On fast networks, the tool will take less than ten minutes to gather data.

Concepts