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You may see the following error in your backup log:

Backup aborted! - Unable to read from disk - Error Code 1117 -
The request could not be performed because of an I/O device error.

Error code 1117 is generated by the Windows operating system and is always caused by Input / Output (I/O (Input / Output) throughput issues with either the disk or the controller that it is attached to. 

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To resolve this error check the disk for possible errors

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Perform the steps below for each volume that you are trying to either create an image of or include in a file & folder backup:

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1. Run an elevated MS-DOS command prompt as follows: 
   
   • For Windows XP and Server 2003: Click 'Start' > 'All Programs' > 'Accessories' > 'Command Prompt'.
   • For Vista/7/8 and Server 2008 and later Servers follow steps from a.
     (Note: if in START screen in Windows 8 start at b.)
     
     1. Press keyboard ?Windows key?
     2. Type word 'command'
     3. Then right-click on ?Command Prompt?
     4. From menu click 'Run as administrator' (in Windows 8, menu is at bottom of screen)
   
   

2. At the command prompt type:
       

   Code Block
   language text
   chkdsk <volume drive letter> /r /f

   Info
   Note: A 'Read' error is generated by the image source disk and a 'Write' error is generated by the backup target disk. Please use the appropriate drive letter in the chkdsk command.

3. If you receive the message ' Would you like to schedule this volume to be checked the next time your system restarts?
   Press ' press 'Y' then enter.followed by Enter

   Info
   Your entire file system will

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1. be checked for errors. This may take some time to complete.