Thank you for your feedback on this concept product. Regarding the fan, the reason for this fan location is the size of the fan. If the fan is in the rear, the fan size would be reduced and it would affect the amount of airflow. The concern of the location of installation of this kind of product having an effect on airflow is noted. The fan's location is over the drive trays and depending on the drive tray design, there would be enough clearance between the fan and a metal plate on the bottom.
If you have any suggestions or questions on our concept products, let us know.