Abstract: A server rack includes a frame, servers and slide rail structures. The frame has a bottom end and a top end opposite to each other. The servers are stacked between the bottom end and the top end. Each of the servers has an operation end and a heat-dissipation end opposite to each other. The slide rail structures connect the servers to the frame for allowing each of the servers to at least partially slide out of the frame towards the corresponding operation end. A distance by which each of the servers slides out of the frame is greater than or equal to a distance by which the adjacent server located closer to the bottom end slides out of the frame.