D-Link DSN-4200 Hardware Reference Guide for DSN-4000 - Page 21

3.1.3 Rack-mount Guidelines The DSN-4X00 storage array can be mounted in a standard 19-inch rack. Observe the following considerations for rack installations. For information about installing the system in a rack, refer to Appendix B and to the documentation for the rack. All rack-mounting hardware must be carefully assembled to properly support the equipment. Follow the instructions in the documentation for the rack. The operating ambient temperature of rack-mounted equipment must not exceed the maximum rated ambient temperature indicated in this guide. The rack cabinet must provide sufficient airflow to the front and back of the DSN-4X00 storage array to maintain correct cooling. It must include ventilation sufficient to exhaust the heat generated by equipment installed in the rack. The rack must allow enough ventilation space between the DSN-4X00 storage array and any other objects in the vicinity. Do not block the air vents on the front and back of the DSN-4X00 storage array enclosure. The air flow clearances specified in this guide must be maintained within the rack. The AC supply circuit for rack-mounted equipment must be capable of supplying the total current specified on all the labels of the rack-mounted equipment. All AC power supply connections must be properly grounded. To ensure the integrity of the earth connection, special attention must be given to connections that are not directly connected to the branch circuit (for example, power strips). If additional DSN-4000 JBOD expansion arrays will be added, leave sufficient space in the rack for those arrays, since the cables supplied for connections between the DSN-4X00 primary array and the DSN-4000 JBOD expansion arrays or between additional expansion arrays require that all arrays be in close proximity to each other. 3.2 Safety Considerations Observe the following guidelines to ensure safety: Do not wear loose clothing that could get caught in the chassis mounting hardware. Wear safety glasses when working under conditions that are hazardous to your eyes. Do not perform any action that creates a potential hazard to people or makes the rack or equipment unsafe. Do not work on the equipment or disconnect cables during a thunderstorm, when wearing a wool sweater or other heavy wool clothing, or when power is applied. Disconnect all power before installation and before connecting or disconnecting cables. Avoid hazards such as moist floor and ungrounded power-extension cables. To avoid damage to the DSN-4X00 storage array due to Electrostatic discharge (ESD), you should wear an ESD-preventive wrist strap when working on the array. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. If no wrist strap is available, ground yourself by touching the metal part of the chassis. DSN-4000 Series Hardware Reference Guide 13