CDCP Question #18: Real Exam Question with Answer & Explanation

The correct answer is A. The casters and feet should be larger to avoid a too heavy point load on the floor tile.. The casters and feet under the rack are used to support the weight of the rack and its equipment, and to allow the rack to be moved if needed. However, the casters and feet should also be designed to avoid putting too much pressure on the floor tile, especially if the data centre

Question

What should be a consideration when having casters (rollers/wheels) or feet under the rack?

Options

AThe casters and feet should be larger to avoid a too heavy point load on the floor tile.
BSkirts at the bottom of the rack to avoid air flow between the hot and cold aisles.
CCasters and feet should be of a soft material, for example rubber, to avoid damage to the raised
DCasters and feet should not be locked to ensure the racks are still able to be moved to another

Explanation

The casters and feet under the rack are used to support the weight of the rack and its equipment, and to allow the rack to be moved if needed. However, the casters and feet should also be designed to avoid putting too much pressure on the floor tile, especially if the data centre uses a raised floor system. A too heavy point load on the floor tile can cause the tile to crack, deform, or collapse, which can damage the rack, the equipment, and the underlying infrastructure. To prevent this, the casters and feet should be larger, so that they can distribute the weight over a larger area and reduce the point load. The casters and feet should also be compatible with the floor type and the load rating of the floor tile.

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