If you want to use Windows 2000's Ntbackup to back up and restore Microsoft Exchange Server 5.5 (you must upgrade Exchange Server to Service Pack 3--SP3--and Windows NT must be running SP6a), I highly recommend that you obtain the Ntbackup bug fix that Microsoft released in March 2000. This update corrects a list of problems that surface when you attempt to restore part or all of your Exchange server with Ntbackup. Some of the more notable errors are
Without this bug fix, an Exchange Server restore operation will most likely fail. According to the Microsoft article "Updated Version of Ntbackup.exe Fixes Several Problem Interactions with Microsoft Exchange" (http://support.microsoft.com/support/ kb/articles/q253/9/10.asp), the initial release of Win2K's Ntbackup might also corrupt the active Exchange Server database when a restore operation fails. Although I'm sure Microsoft will include this update in Win2K SP1, the service pack might not be available at publication time, so be sure you install the Ntbackup hotfix before you use Ntbackup to back up or restore your Exchange server.