Windows Server 2003 cannot perform backup jobs to tape devices on a Storage Area Network (842411)

WORKAROUND

There are three methods to resolve this problem.

Method 1: Disable all TEST UNIT READY (TUR) requests for a tape service

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.

1. Click Start, click Run, type regedit, and then click OK.
2. Search under the \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum registry subkey for all instances of the value class that equal TapeDrive.
3. In that subkey, there will also be a service value that tells you what service handles that device. You will find this Service_Name key under the \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services registry subkey. Under the Service_Name key, you will find an Enum key. You can use this to confirm the devices that are handled by this service.
4. Locate the subkey that corresponds to your storage device, and then right-click the subkey.
5. Point to New, and then click DWORD Value. Type AutoRun as the entry name, and then press ENTER.
6. Right-click AutoRun, and then click Modify. In the Value data box, type a value of 0 to turn off the AutoRun feature.
   
   Key: \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Service_Name
   Value: AutoRun
   Type: REG_DWORD
   Data: 0 is disabled, 1 is enabled (default).

Method 2: Disable TUR requests for only specific devices for a tape service

1. Locate the tape service as described in steps 1 through 4 of Method 1.
2. Set the REG_SZ AutoRunAlwaysDisable value as follows. (Do not set the REG_DWORD AutoRun value.)
   1. The first 8 characters are the vendor ID. If the vendor ID is less than 8 characters, it is space padded.
   2. The second 16 characters are the product ID. If the product ID is less than 16 characters, it is space padded.
   3. If there is more than one device to be added, the next one is appended to the previous one.
      
      Key: \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Service_Name
      Value: AutoRunAlwaysDisable
      Type: REG_SZ
      Data: The vendor/product id string to disable.

In the following example, you see a correlation with the device under the Enum key:

Method 3: Disable TUR requests for specific devices programmatically

To programmatically disable TUR requests for specific devices, you must call the DeviceIoControl function with the IOCTL_STORAGE_MCN_CONTROL I/O control code. For more information, visit the following Microsoft Web site: HP has documented a workaround that requires you to start and then stop the Removable Storage service every time the server is restarted. This solution works because the Removable Storage service makes the DeviceIoControl function call to all tape devices when the service is stopped.

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