Abstract: A system for protecting a hard disc drive (HDD) from acoustic energy in a chassis comprises a set of foam strips formed from acoustically absorptive material. Each foam strip has a thickness such that, when the HDD is installed in a chassis, the acoustically absorptive material is in a substantially uncompressed state. Foam strips are separated by an airflow path width, wherein two foam strips, a first surface of an HDD and a second surface form an airflow path. The second surface may be a surface of an adjacent HDD or a wall of the chassis. Each foam strip has a width and length configured for absorbing acoustic energy that would otherwise propagate through the airflow path.

Abstract: A computing chassis, including hard disk drives positioned at a first end of the chassis; a fan module positioned at a second end of the chassis; a first baffle having acoustic absorbing material, the first baffle extending between a first and a second side of the chassis, wherein the first and second sides of the chassis extend between the first and the second ends of the chassis, the first baffle spaced-apart from the fan module a first distance; a second baffle having acoustic absorbing material, the second baffle extending between the first and the second side of the chassis, the second baffle spaced-apart from the fan module a second distance greater than the first distance, wherein the first and the second baffle extend between the first and second sides of the chassis perpendicular to an airflow, and the acoustic absorbing material of the baffles attenuate acoustic waves.