Need a tool to keep track of the performance of an Active Directory Server?

Keeping track of users and applications on your network is Active Directory’s job. But your job is making sure Active Directory is up and running. Active Directory (AD), Microsoft’s implementation of the LDAP directory services, stores all user names and passwords and governs access to key applications. AD lets you keep track of all the user accounts and passwords in your organization. It allows administrators to implement enterprise-wide policies, credentials and security. It allows you to limit the numbers of user names and logins end-users need to remember and increases security.