A rack for supporting data center equipment, comprising: a frame having first and second lateral ends (14, 16) opposite one another in a lateral direction of the rack, and front and rear ends (18, 20) opposite one another in a depth direction of the rack, the depth direction being perpendicular to the lateral direction, the frame comprising: at least two vertical wall supports laterally spaced apart from one another; and a base defining a bottom portion of the rack, the at least two vertical wall supports being connected to the base and extending upwardly therefrom, the base defining a first opening and a second opening extending in the lateral direction of the rack for receiving a fork of a lifting machine along the lateral direction of the rack, the base comprising: a first upper wall defining in part the first opening; a second upper wall defining in part the second opening, the second upper wall being generally parallel to the first upper wall; a lower wall disposed between the first and second upper walls along the depth direction, the lower wall extending vertically lower than the first and second upper walls; and two side walls extending at least partly vertically from the lower wall to a respective one of the first and second upper walls, the two side walls and the lower wall defining together a middle cavity, each of the two side walls defining a third opening and a fourth opening for receiving the fork of the lifting machine along the depth direction of the rack, characterized in that the at least two vertical wall supports extend into the middle cavity. a frame having first and second lateral ends (14, 16) opposite one another in a lateral direction of the rack, and front and rear ends (18, 20) opposite one another in a depth direction of the rack, the depth direction being perpendicular to the lateral direction, the frame comprising: at least two vertical wall supports laterally spaced apart from one another; and a base defining a bottom portion of the rack, the at least two vertical wall supports being connected to the base and extending upwardly therefrom, the base defining a first opening and a second opening extending in the lateral direction of the rack for receiving a fork of a lifting machine along the lateral direction of the rack, the base comprising: a first upper wall defining in part the first opening; a second upper wall defining in part the second opening, the second upper wall being generally parallel to the first upper wall; a lower wall disposed between the first and second upper walls along the depth direction, the lower wall extending vertically lower than the first and second upper walls; and two side walls extending at least partly vertically from the lower wall to a respective one of the first and second upper walls, the two side walls and the lower wall defining together a middle cavity, each of the two side walls defining a third opening and a fourth opening for receiving the fork of the lifting machine along the depth direction of the rack, at least two vertical wall supports laterally spaced apart from one another; and a base defining a bottom portion of the rack, the at least two vertical wall supports being connected to the base and extending upwardly therefrom, the base defining a first opening and a second opening extending in the lateral direction of the rack for receiving a fork of a lifting machine along the lateral direction of the rack, the base comprising: a first upper wall defining in part the first opening; a second upper wall defining in part the second opening, the second upper wall being generally parallel to the first upper wall; a lower wall disposed between the first and second upper walls along the depth direction, the lower wall extending vertically lower than the first and second upper walls; and two side walls extending at least partly vertically from the lower wall to a respective one of the first and second upper walls, the two side walls and the lower wall defining together a middle cavity, each of the two side walls defining a third opening and a fourth opening for receiving the fork of the lifting machine along the depth direction of the rack, a first upper wall defining in part the first opening; a second upper wall defining in part the second opening, the second upper wall being generally parallel to the first upper wall; a lower wall disposed between the first and second upper walls along the depth direction, the lower wall extending vertically lower than the first and second upper walls; and two side walls extending at least partly vertically from the lower wall to a respective one of the first and second upper walls, the two side walls and the lower wall defining together a middle cavity, each of the two side walls defining a third opening and a fourth opening for receiving the fork of the lifting machine along the depth direction of the rack, characterized in that the at least two vertical wall supports extend into the middle cavity.