An elevator comprising a first elevator unit vertically movable in a hoistway; a second elevator unit vertically movable in a hoistway; a suspension roping comprising one or more belt-shaped suspension ropes (3a,3b,3c) interconnecting the first elevator unit and the second elevator unit, each said belt-shaped suspension rope (3a,3b,3c) being connected to the elevator units (1, 2) by its ends; a drive wheel for moving said one or more belt-shaped suspension ropes (3a,3b,3c); a plurality of cambered diverting wheels (4, 6); said one or more belt-shaped suspension ropes (3a,3b,3c) each passing around the drive wheel and comprising consecutively - a first rope section (a) extending between the drive wheel and the first elevator unit; and - a second rope section (b) extending between the drive wheel and the second elevator unit wherein both rope sections (a, b) diverge from the drive wheel towards the same lateral side thereof, the first rope section (a) passing over a first cambered diverting wheel, in particular resting against a cambered circumferential surface area (A,B,C) thereof, and therefrom down to the first elevator unit, and the second rope section (b) passing over a second cambered diverting wheel, in particular resting against a cambered circumferential surface area (A,B,C) thereof, and therefrom down to the second elevator unit, and wherein said first cambered diverting wheel, said drive wheel, and said second cambered diverting wheel are mounted to rotate at a stationary location above the elevator units (1, 2), mounted on stationary structures of the building, which are structures of a machine room provided above or next to the hoistway, and wherein the first rope section (a) passes down from the first cambered diverting wheel to the first elevator unit and the second rope section (b) passes down from the second cambered diverting wheel to the second elevator unit with distance between them, which distance is at most 1.5 times the diameter of the drive wheel. a first elevator unit vertically movable in a hoistway; a second elevator unit vertically movable in a hoistway; a suspension roping comprising one or more belt-shaped suspension ropes (3a,3b,3c) interconnecting the first elevator unit and the second elevator unit, each said belt-shaped suspension rope (3a,3b,3c) being connected to the elevator units (1, 2) by its ends; a drive wheel for moving said one or more belt-shaped suspension ropes (3a,3b,3c); a plurality of cambered diverting wheels (4, 6); said one or more belt-shaped suspension ropes (3a,3b,3c) each passing around the drive wheel and comprising consecutively - a first rope section (a) extending between the drive wheel and the first elevator unit; and - a second rope section (b) extending between the drive wheel and the second elevator unit wherein both rope sections (a, b) diverge from the drive wheel towards the same lateral side thereof, the first rope section (a) passing over a first cambered diverting wheel, in particular resting against a cambered circumferential surface area (A,B,C) thereof, and therefrom down to the first elevator unit, and the second rope section (b) passing over a second cambered diverting wheel, in particular resting against a cambered circumferential surface area (A,B,C) thereof, and therefrom down to the second elevator unit, and wherein said first cambered diverting wheel, said drive wheel, and said second cambered diverting wheel are mounted to rotate at a stationary location above the elevator units (1, 2), mounted on stationary structures of the building, which are structures of a machine room provided above or next to the hoistway, and wherein the first rope section (a) passes down from the first cambered diverting wheel to the first elevator unit and the second rope section (b) passes down from the second cambered diverting wheel to the second elevator unit with distance between them, which distance is at most 1.5 times the diameter of the drive wheel. - a first rope section (a) extending between the drive wheel and the first elevator unit; and - a second rope section (b) extending between the drive wheel and the second elevator unit