A tape device that was formatted by using ARCserve software does not work after you remove ARCserve software in Windows Server 2003 (867702)

Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

SYMPTOMS

You remove ARCserve software from a Microsoft Windows Server 2003-based computer. When you try to use a tape device that was formatted by using the ARCserve software, the tape device does not work. Additionally, events that are similar to the following may be logged in the application event log:

Event 10

Event ID: 10
Date: 5/24/2004
Time: 6:12:56 PM
Source: Removable Storage Service
User: N/A
Computer: Computer Name
Description:
Library library name failed to write a Free media label on media 000001L1 because RSM found a different piece of media in the library than was selected for the move to Free pool operation.

Event 119

Event ID: 119
Date: 5/24/2004
Time: 6:12:56 PM
Source: Removable Storage Service
User: N/A
Computer:Computer Name
Description:
RSM could not Verify the media in drive Drive 5 of library library name because the on-media-identifier did not match what was expected.

Event 120

Event ID: 120
Date: 5/24/2004
Time: 6:12:56 PM
Source: Removable Storage Service
User: N/A
Computer: Computer Name
Description:
RSM could not Verify the media in drive Drive 5 of library library name because the on-media-identifier did not match what was expected.

Event 127

Event ID: 127
Date: 5/24/2004
Time: 6:12:56 PM
Source: Removable Storage Service
User: N/A
Computer: Computer Name
Description:
RSM mounted medium 000001L1 in library library name and verification of the On-Medium Id failed.

CAUSE

This problem occurs because Removable Storage is looking for a file that has been removed. When Removable Storage tries to load a media label library file, Removable Storage cannot recognize the on-media identifier (OMID) on the tape device. Removable Storage does not recognize the OMID because the media label library file has been removed from the registry.

When you install ARCserve software, the software installation process registers a media label library file with Removable Storage. A media label library file is a .dll file that uses a specific tape format to identify the data that is written on a tape device. When you use a tape device that is formatted by using ARCserve software, Removable Storage uses the media label library file to recognize the OMID on the tape device. If you try to use the tape device after the ARCserve software has been removed, Removable Storage still refers to the media label library registry entry. Removable Storage still tries to use the .dll file that has been removed to recognize the OMID on the tape device.

RESOLUTION

To resolve this problem, remove the media label library registry entry that is associated with the ARCserve software. To do this, follow these steps:

Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Click Start, click Run, type regedit in the Open box, and then click OK.
In Registry Editor, locate and click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\NTMS\OMID\Tape\ARC
Right-click ARC, and then click Delete.
In the Confirm Key Delete dialog box, click Yes.
Quit Registry Editor.
Click Start, click Run, type cmd in the Open box, and then click OK.
Type the following command at a command prompt, and then press ENTER:
net stop "removable storage"
Type the following command at a command prompt, and then press ENTER:
net start "removable storage"
Note When you restart Removable Storage, it is updated with only the media label library files that are currently registered. Additionally, because the tape device is recognized as unformatted, you can now perform a backup on the tape device that does not have a Microsoft Tape Format (MTF) label type on it. To do this, you can use the /um switch of the Ntbackup tool.

MORE INFORMATION

For additional information about problems with scheduled backups, click the following article numbers to view the articles in the Microsoft Knowledge Base:

295159 Scheduled backups may hang after mounting tape

240856 Removable Storage Manager terms and definitions

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