You can create an online backup of Exchange databases to allow users access to messaging and collaboration services while the databases are being backed up. You should always make sure the account you use to log on to the server has the appropriate permissions.
In Exchange 2000, you use the Windows 2000 backup utility (NTBackup.exe) to back up Windows 2000 and Exchange 2000 data. For general information about Windows 2000 Backup, see the Windows 2000 Server documentation.
Warning Do not use the version of NTBackup.exe included with any beta or pre-releases of Windows 2000 to back up Exchange 2000 data. When you back up Exchange 2000 data, you must use the version of NTBackup that is included with Windows 2000 or later.
To prepare to back up Exchange: