The z15 can be installed on a raised or non-raised floor. For more information about weight  distribution and floor loading tables, see  IBM 8561 Installation Manual for Physical Planning ,  GC28-7002. This data is used with the maximum frame weight, frame width, and frame depth  to calculate the floor loading. Weight estimates for the maximum system configurations on the 8561 are listed in  Table 11-12. The power and weight estimation tool for Z servers on Resource Link covers the estimated  weight for your designated configuration. It is available on IBM Resource Link website. On the Resource Link page, click  Tools Power and weight estimation . This section describes the floor mounting, power, and I/O cabling options. For more  information, see  IBM 8561 Installation Manual for Physical Planning ,  GC28-7002. z15 servers can be installed on a raised or non-raised floor. The water-cooled models require  a raised floor.  Note:  On the z15, all I/O cabling and power cords come from the rear of the machine;  therefore, all related features for Bottom and Top Exit cabling are in the rear of the frame. 11.3.1 Raised floor or non-raised floor 11.3 Physical planning Table 11-12 Weights for maximum machine configurations (PDU) Notes:  Consider the following points: GLYPH<SM590000> All weights are approximate and do not include Earthquake Kit hardware. GLYPH<SM590000> Weight is based on the maximum system configuration. GLYPH<SM590000> Be certain that the raised floor on which you are installing the server can support the weight. 464  IBM z15 (8561) Technical Guide Frame  configurations Individual frame weights kg (lbs) Total weight kg (lbs) Z Frame A Frame B Frame C Frame A - 795 k g (1753 lbs) - - 795 kg (1753 lbs) ZA 711 kg (1568) lbs 775 kg (1709 lbs) - - 1486 kg (3277 lbs) ZAC 711 kg (1568) lbs 756 kg (1667 lbs) - 740 kg (1632 lbs) 2207 kg (4866 lbs) AB - 775 k g (1709 lbs) 725 kg (1599 lbs) - 1500 kg (3308 lbs) ZAB 711 kg (1568) lbs 756 kg (1667 lbs) 725 kg (1599 lbs) - 2192 kg  (4833 lbs) ZABC 711 kg (1568) lbs 756 kg (1667 lbs) 705 kg (1555 lbs) 641 kg (1413 lbs) 2813 kg (6203 lbs)