Is it worth to keep a PC case open?

I got a new server for Dandandin and I kept it open from all sides while I was doing tests. Average disk temperature 23 ° C. When I saw that was stable, I closed, placing fans on the front and on the back, to have a positive airflow. Disk temperature lowered a couple of degrees, and the disk has much more activity than last week!

caso-chiusoSo, even if it might seem that an open case will have “more airflow”, you will have a better airflow with a closed case.

update: looks like smartctl is not reporting accurately the hdd temperature. I need to do more tests with hddtemp.

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