i got 2 hd in the cage, with fan blowing at them (35 & 39 degrees). 1 hd on top of the dvdwriter, with fan blowing at it too (43 degrees). By right the single hd should have the lowest temp among the 3, but its the highest. '

Last time in aircon room, all the hd had average temps of 30. Wondering why yours cannot go below 30.