Looking at the air flow through these there is considerable obstructions. However it seems to me one of the largest is the restricted exit at the rear of the chassis. I have both the infiniband Mez card and something in the PCI slot. That leaves very little perforated metal for all the hot air to escape. The top nodes have the advantage of the vents on the top of the case but the bottom two do not.
I did take the white labels off power and other connectors at the front of the mb since they are a further air restriction.
Also if you are not running all the hds I would leave the middle slot open and install hds in the top and bottom trays. The middle being directly in front of the opening in the backplane where air is pulled through by fans.
Just some thoughts.
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I did take the white labels off power and other connectors at the front of the mb since they are a further air restriction.
Also if you are not running all the hds I would leave the middle slot open and install hds in the top and bottom trays. The middle being directly in front of the opening in the backplane where air is pulled through by fans.
Just some thoughts.
.