HDLM collects information for troubleshooting into log files. HDLM can also filter error information according to the error level when collecting the information. The following figure shows the flow of data when error information is collected on a host which is running HDLM .
Figure. Flow of data when collecting error information
Logs might be collected in layers below HDLM, such as for the SCSI driver. For more details, see the Linux documentation.