... system backup/restore.Understanding BackupBefore you can get started using Windows 2000 Backup, or any other backup pro-gram, you need to know how backing up works and have a basic backup strategy ... find a clean backup of the database that showed no evidence ofcorrupt metadata.Figure 17-2 illustrates data backed up on a daily basis, and in this case, bad data isbacked up for three days ... both full and modified, and current and pastfiles of your data, and that it is safe to destroy the data on the scratch media.It is important to fully understand the concept of save and scratch...