Check evaluation results from UNIX servers return an "Unknown" value in Control Compliance Suite (CCS).
In the 'Messages' or 'Errors' tab for a Data Collection job an error is returned:
The query was halted before completion... Query time out in command execution: sh -c "du -k..."
Also in an Evaluation job an error may be returned:
Failed to retrieve data from SQL for asset...
Both errors may appear together in a Collection-Evaluation-Reporting job.
A timeout occurring due to large number of files being searched. Other typical causes include targeting large file systems or remote file systems via a mount point.