Prior to the erasure there can be a smart test done. It will check the hard drive condition and it this has too many errors it will fail the process.

in the wd-options.cfg file you can set the amount of errors to pass or fail the smart test.

If the smart test fails it does not consume a license but it will generate a failed report.

Below settings can be changed for the smart test and all other error settings. 

stop-on-dirty=true

fail-on-smart-fail=true

max-drive-errors=1        # you can change this value

smart-test-short=true

smart-error-log-max=0     # you can change this value

smart-max-remap=0         # you can change this value

If you need help setting this up please contact support@global-emea.com