Warehousing is costly in terms of human resources and of the facilities and equipment‘s required, and its performance will affect directly on overall supply chain performance. Inadequate design or managing of warehouse systems will jeopardize the achievement of required customer service levels and the maintenance of stock integrity, and result in unnecessarily high costs. The recent trends and pressures on supply chain / logistics-forever increasing customer service levels, inventory optimization, time compression and cost minimization –have inevitably changed the structure of supply chains and the location and working of warehouses within the supply chains network.