What does this error tell me?

one of my clients does not do a image backup because of this error message:

Error on client occurred: Error while reading from shadow copy device. Datenfehler (CRC-Prüfung)

last translated Data error (CRC Check)

Does this mean my Harddisk on the Client is nearly dead? Or is there some Software blocking reading from shadow copy device?

https://blog.urbackup.org/319/how-to-handle-data-error-cyclic-redundancy-check-system-error-code-23

Did it work/fix the problem?

it seems to be the harddrive, have to play back an older image with trueimage because urbackup was not able to do a image backup because of harddrive problem.