HP DL760 HP ProLiant DL760 Generation 2 Server User Guide - Page 59

Installing the Server in a Rack Stabilizers The anti-tip stabilizer provides stability and support when equipment is installed, removed, or accessed within the rack. HP recommends that you use a stabilizer option kit with a stand-alone rack. Ballast Kits Ballast kits can be added to a cabinet to increase side-to-side and front-to-back mechanical stability. Lightly loaded cabinets may require ballast to keep them from tipping over when a force is applied to the side of the cabinet. Heavily loaded systems, depending on the particular configuration involved, usually do not require ballast. To be sure of rack stability, the minimum weight of the installed equipment should be 114 kg (210 lb). Ballast kits should be added in the event a system has less than 114 kg (210 lb) minimum weight. In addition, ballast kits should also be installed if any single system component weighs over 45 kg (100 lb) such that a minimum of 91 kg (200 lb) of ballast and equipment remains in place when the component is extended from the rack. A single ProLiant DL760 G2 server typically weighs between 63 kg and 73 kg (140 lb to 161 lb), depending on configuration. If a single ProLiant DL760 G2 server is the only component installed in a rack, you must add two ballast kits. Each kit contains two 18 kg (40 lb) ballasts. Two ballast kits (a total of four ballasts) equal 73 kg (160 lb), bringing the total up to a minimum of 136 kg (300 lb). If two ProLiant DL760 G2 servers are the only components installed in a rack, you must add a single ballast kit, which maintains a minimum weight of 91 kg (200 lb) remaining in the rack when one of the servers is extended. Refer to any additional installation documentation provided with the rack. HP ProLiant DL760 Generation 2 Server User Guide 2-15