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Article ID: 2009365 - Last Review: February 24, 2010 - Revision: 3.0


When you try to add an additional disk to a scheduled backup by using the Windows Server Backup Schedule Wizard, you may receive the following error message:

"The filename, directory name, or volume label syntax is incorrect"


This problem may occur if a previously-added destination disk is not currently attached to the server. When the wizard completes, the currently-listed destination disks are verified. If any of these disks are missing, you receive the error message that is described in the "Symptoms" section.


To resolve this issue, use one of the following options.

Note To configure or modify a daily backup schedule, you must be a member of the Administrators group. In addition, you must run the wbadmin command from an elevated command prompt. To open an elevated command prompt, click Start, right-click Command Prompt, and then click Run as administrator.

Option 1

  1. Reattach the missing disk or disks.
  2. Make sure that all the disks that are defined as backup destination disks are attached to the server.
  3. Try again to add an additional disk to a scheduled backup by using the Windows Server Backup Schedule Wizard.

Note If you are using offsite storage, or if another situation prevents all destination disks from being attached at the same time, go to option 3.


Option 2

If the missing disk is no longer available, remove it as a destination disk from the backup wizard.

Note If the missing disk is the only destination disk that is defined in the backup schedule, you will receive the following error message when you try to remove it. If this occurs, click Stop backup, and then create a new backup schedule.

"Error: You cannot remove this backup storage destination unless you add another storage destination or stop the scheduled backup. A schedule backup requires at least one backup storage destination.

To remove a destination disk from a scheduled backup, follow these steps: 

  1. In the Windows Server Backup snap-in, click Backup Schedule.
  2. Click Modify backup, and then click Next.
  3. Leave the Backup Configuration setting unchanged, and then click Next.
  4. Leave the Backup Time setting unchanged, and then click Next.
  5. Leave the Destination Type setting unchanged, and then click Next.
  6. Select Remove current backup destinations, and then click Next.
  7. Select the backup destination that is no longer attached, and then click Next.
    Note Typically, the disk will have the name "(Disk offline)."
  8. Verify that the configuration is correct, and then click Finish.


Option 3

Add a new disk to the backup schedule by running the wbadmin command from an elevated command prompt.

  1. Run the following command from an elevated command prompt to determine the Disk Identifier of the new disk:
         wbadmin get disks
  2. Based on the output, locate the disk that will be added to the scheduled backup. Make a note of the Disk Identifier. The output will resemble the following:
    Disk name: xxxxxxxxxxx
    Disk number: x
    Disk identifier: {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
    Total space: xxx.xx GB
    Used space : xxx.xx GB
  3. Run the following command to add the new disk to the Scheduled backup.  Use the Disk Identifier from the previous step as the "AddTarget" parameter.
         WBADMIN ENABLE BACKUP -addtarget:{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
  4. When you receive the following prompt, type Y for Yes.

"Do you want to enable scheduled backups with the above settings?"

More Information

For more information, visit the following Microsoft Web sites:
What's New in Windows Server Backup on Windows Server 2008 R2

  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
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