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7-3+

Backup Options

Backup options are configured by choosing the Options command from the Tools menu. Many of these options configure defaults that are used by the Backup Utility and the command-line backup tool, Ntbackup. Those settings can be overridden by options of a specific job.

General Options

The General tab of the Options dialog box includes the following settings:

Compute Selection Information Before Backup And Restore Operations Backup estimates the number of files and bytes that will be backed up or restored before beginning the operation.

Use The Catalogs On The Media To Speed Up Building Restore Catalogs On Disk If a system does not have an on-disk catalog for a tape, this option allows the system to create an on-disk catalog from the on-media catalog. However, if the tape with the on-media catalog is missing or if media in the set is damaged, you can deselect this option and the system will scan the entire backup set (or as much of it as you have) to build the on-disk catalog. Such an operation can take several hours if the backup set is large.

Verify Data After The Backup Completes The system compares the contents of the backup media to the original files and logs any discrepancies. This option obviously adds a significant amount of time for completing the backup job. Discrep-ancies are likely if data changes frequently during backup or verification, and it is not recommended to verify system backups because of the number of changes that happen to system files on a continual basis. So long as you rotate tapes and discard tapes before they are worn, it should not be necessary to verify data.

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Backup The Contents Of Mounted Drives A mounted drive is a drive volume that is mapped to a folder on another volume’s namespace, rather than, or in addi-tion to, having a drive letter. If this option is deselected, only the path of the folder that is mounted to a volume is backed up; the contents are not. By selecting this option, the contents of the mounted volume is also backed up. There is no disad-vantage in backing up a mount point, however if you back up the mount point and the mounted drive as well, your backup set will have duplication.

If you primarily back up to file and then save that file to another media, clear the fol-lowing options. If you primarily back up to a tape or another media managed by Removable Storage, select the following options.

Show Alert Message When I Start the Backup Utility And Removable Storage Is Not Running.

Show Alert Message When I Start The Backup Utility And There Is Recognizable Media Available.

Show Alert Message When New Media Is Inserted.

Always Allow Use Of Recognizable Media Without Prompting. Tip The Always Allow Use Of Recognizable Media Without Prompting option can be selected if you are using local tape drives for backup only, not for Remote Storage or other functions. The option eliminates the need to allocate free media using the Removable Storage node in the Computer Management console.

Backup Logging

The Options dialog has a tab called Backup Log. Logging alerts you to problems that might threaten the viability of your backup, so consider your logging strategy as well as your overall backup plan. Although detailed logging will list every file and path that was backed up, the log is so verbose you are likely to overlook problems. Therefore, summary logging is recommended, and is the default. Summary logs report skipped files and errors.

The system will save 10 backup logs to the path %UserProfile%\Local Settings \Application Data\Microsoft\Windows NT\Ntbackup\Data. There is no way to change the path or the number of logs that are saved before the oldest log is replaced. You can, of course, include that path in your backup and thereby back up old logs.

Lesson 3 Advanced Backup and Restore 7-25

File Exclusions

The Exclude Files tab of the Options dialog box also allows you to specify extensions and individual files that should be skipped during backup. Default settings result in the Backup Utility’s skipping the page file, temporary files, client-side cache, debug folder, and the File Replication Service (FRS) database and folders, as well as other local logs and databases.

Files can be excluded based on ownership of the files. Click Add New under Files Excluded For All Users to exclude files owned by any user. Click Add New under Files Excluded For User <username> if you want to exclude only files that you own. You can specify files based on Registered File Type or based on an extension using the Cus-tom File Mask. Finally, you can restrict excluded files to a specific folder or hard drive using the Applies To Path and the Applies To All Subfolders options.

Advanced Backup Options

After selecting files to back up, and clicking Start Backup, you can configure additional, job-specific options by clicking Advanced. Among the more important settings are the following:

Verify Data After Backup This setting overrides the default setting in the Backup Options dialog box.

If Possible, Compress The Backup Data To Save Space This setting com-presses data to save space on the backup media, an option not available unless the tape drive supports compression.

Disable Volume Shadow Copy VSS allows the backup of locked and open files. If this option is selected, some files that are open or in use may be skipped.

The Ntbackup Command

The Ntbackup command provides the opportunity to script backup jobs on Windows Server 2003. Its syntax is

Ntbackup backup {"path to backup" or "@selectionfile.bks"} /j "Job Name" options

The command’s first switch is backup, which sets its mode—you cannot restore from the command line. That switch is followed by a parameter that specifies what to back up. You can specify the actual path to the local folder, network share, or file that you want to back up. Alternatively, you can indicate the path to a backup selection file (.bks file) to be used with the syntax @selectionfile.bks. The at (@) symbol must precede the name of the backup selection file. A backup selection file contains information on

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the files and folders you have selected for backup. You have to create the file using the graphical user interface (GUI) version of the Backup Utility.

The third switch, /J "JobName", specifies the descriptive job name, which is used in the backup report.

You can then select from a staggering list of switches, which are grouped below based on the type of backup job you want to perform.

Backing Up to a File

Use the switch

/F "FileName"

where FileName is the logical disk path and file name. You must not use the following switches with this switch: /T /P /G.

The following example backs up the remote Data share on Server01 to a local file on the E drive:

ntbackup backup "\\server01\Data" /J "Backup of Server 01 Data folder" /F "E:\Backup.bkf"

Appending to a File or Tape

Use the switch:

/A

to perform an append operation. If appending to a tape rather than a file, you must use either /G or /T in conjunction with this switch. Cannot be used with /N or /P.

The following example backs up the remote Profiles share on Server02 and appends the set to the job created in the first example:

ntbackup backup "\\server02\Profiles" /J "Backup of Server 02 Profiles folder" /F "E:\Backup.bkf" /A

Backing Up to a New Tape or File, or Overwriting an Existing Tape

Use the switch:/N "MediaName"where MediaName specifies the new tape name. You must not use /A with this switch.

Lesson 3 Advanced Backup and Restore 7-27

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