A server housing for accommodating plurality of hard drives includes a shell body and a plurality of cases. The shell body has a bottom wall, a circuit region and a plurality of partition walls parallel to each other. The circuit region and the partition walls are disposed on the bottom wall. The cases are respectively drawably disposed between the partition walls. A plurality of separation boards and a plurality of electrical contacts are disposed in the cases for accommodating the hard drives between the separation boards. Each of the separation boards has a planar face and a pair of abutting walls. A plurality of abutting protrusions is formed on each of the abutting walls and protrudes inward. The abutting protrusions of the abutting walls abut the hard drives between the separation boards. The electrical contacts provide electrical connection between the hard drives and the circuit region.