NetWorker： Data Domain Device Mount Fails with Error 5520

摘要: Mounting or creating a Data Domain (DD) device in NetWorker may fail with error code 5520 if Retention Lock (RL) is not enabled and the system attempts to modify a retention-locked file. This issue is linked to an unexpected value in the global encryption setting on the DD system. ...

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症状

Device mount or creation fails with the following error:

  • Err 5520: Cannot delete or modify a retention-locked file.

        
原因

        
The failure occurs because the global encryption strength setting on the Data Domain system is incorrectly capitalized. NetWorker expects specific lowercase values, and mismatches can trigger retention lock-related errors during device operations.

  
Example of incorrect configuration:

  
    
   
  • 
    
    # ddboost option show
Option                          Value
------------------------------  -------
global-encryption-strength      Medium
    • 
  

  

        
解决方案

        
Update the encryption setting to use the correct lowercase value. Acceptable values are:

  
    
   
  • none
    • 
   
  • medium
    • 
   
  • high
    • 
  

  
To correct the setting:

  
在同一 RPA 上运行以下命令：

  
    
   
  • 
    
    ddboost option set global-authentication-mode none global-encryption-strength medium
    • 
  

  
This change ensures compatibility with NetWorker operations and resolves the mount failure.

  


            


        

        
        
受影响的产品

        NetWorker Family, NetWorker
    
产品

        Data Domain







                        

                            

    

        

            

                
                    
 文章属性

                
            

            

                

                        
文章编号: 000381991

                

                
                

                        
文章类型: Solution

                

                

                        
上次修改时间: 22 10月 2025


                

                    

                            
版本:  1

                    


            


        

    

    

        

            

                
                    
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