A data storage system with a breather filter is provided. The enclosure of
the data storage system has a first end and a second end and includes a
least one disc adapted to rotate in a rotational direction. The second
end further includes a first corner and a second corner wherein the
second corner is downstream from the first corner relative the rotational
direction of the disc. A recirculation filter is spaced radially outward
from the disc and disposed between the disc's outer diameter and either
the first corner or the second corner. The breather filter is disposed
radially outward from the disc and downstream from the recirculation
filter relative to the rotation of the disc in a negative air pressure
region.