Summary

20 IT Essentials: PC Harware and Software Companion Guidethe Windows backup utility. Any options you want to override must be included at the commandline. The NTBACKUP command cannot be used to restore files.A combination of backup types, as shown in Table 16-2, allow the data to be backed upefficiently. A full or normal backup is a copy of all files on the drive. An incremental backupbacks up only those files created or changed since the last normal or incremental backup.An archive bit marks files as having been backed up. A differential backup copies filescreated or changed since the last normal or incremental backup, but it does not mark files ashaving been backed up. Backing up data can take time, so it is preferable to do backupswhen the network traffic is low. Other types of backups include daily backup and copybackup, which do not mark the files as having been backed up.Table 16-2Backup TypesType of BackupFull or NormalIncrementalDifferentialDailyCopyDescriptionArchives all selected files and resets the archive bitArchives all selected files that have changed since the last incrementalbackupArchives all selected files that have changed since the last fullbackupArchives all selected files that have changed on the day of thebackupArchives all selected files but does not reset the archive bitThe data backup media is just as important as the data on the computer. You should storethe backup media in a climate-controlled off-site storage facility with adequate physicalsecurity. The backups should be readily available for access in case of an emergency.How ToTroubleshoot SecurityThe troubleshooting process is used to help resolve security issues. These problems rangefrom simple, such as creating a backup, to more complex, such as a firewall configuration.Follow the steps outlined in the following sections to accurately identify, repair, and documentthe problem:Step 1.Step 2.Step 3.Step 4.Gather data from the customer.Verify the obvious issues.Try quick solutions first.Gather data from the computer.