Because Active Directory stores information about all the objects on the network, it is very important to make sure that the information contained in the AD is timely and accurate. Protecting the integrity of the data stored in your Active Directory and optimizing the directory’s performance involves frequent monitoring and tweaking. I recommend assigning a set schedule for performing maintenance tasks.
The most important part of your network is its users. If you’ve created a good Organizational Unit structure and assigned Group Policies in an efficient manner, you shouldn’t have much trouble maintaining user accounts. If an employee leaves the company and can potentially return, it is best to disable, rather than delete, the account.
It is extremely important to back up data regularly. Users can lose data through malicious virus or worm attacks, by catastrophic hardware failure, or because of a simple mistake, such as accidentally deleting an important file. The safest policy is to keep frequent, multiple copies of data at separate locations.
The Active Directory can be backed up using the Windows Backup program included with Windows 2000. You’ll probably have to schedule backups ...