Currently hardware.redhat.com only accepts 16mb files. There should be an option in the test suite to create only 16mb files. So when a certification test completes. It would have 4 16mb files, in place of 1 50mb file.
If it is not possible to increase the file size on the cert submission site then this would be a good backup plan.
The RHEL7.x redhat-certification-2.4-20160414 & RHEL6.x redhat-certification-backend-2.4-20160414 cert kit components save off the results after each test run. This is expected to work around the 16MB file size limit on the submission site.
I understand with the new release this feature is now in place. I am closing this Feature request.