Dell Force10 S25N-S50N Installing S25N and S25V Systems - Page 16

Cabinet Placement The cabinet must meet the following criteria: • Minimum cabinet size and airflow are according to the EIA standard. • Minimum of 5 inches (12.7 cm) between the side intake and exhaust vents and the cabinet wall. Rack Mounting When you prepare your equipment rack, ensure that the rack is earth ground. The equipment rack must be grounded to the same ground point used by the power service in your area. The ground path must be permanent. Fans and Airflow Ventilation is side-to-side, with five fans (four fans in the S25N) on the left side of the switch that operate at a constant speed. For proper ventilation, position the system in an equipment rack (or cabinet) with a minimum of five inches (12.7 cm) of clearance around the side intake and exhaust vents. When two S-Series systems are installed side by side, position the two systems at least 5 inches (12.7 cm) apart to permit proper airflow. The acceptable ambient temperature ranges are listed in Environmental Parameters on page 41. As listed in Table 3, "Status Panel LED Display," on page 13, the front panel of the system has an Alarm status LED, which is green when the switch is operating within required temperature parameters and all components are operating normally, including fans. The LED is amber when the temperature or components are outside expected parameters, red in a major alarm. FTOS turns on major and minor alarms and logs temperature warnings at the following temperatures (in degrees Celsius), and logs another message when the temperature returns to normal. The Command Line Interface (CLI) also reports an alarm. The fan speed changes accordingly. Table 4 Major and Minor Temperature (Degrees Celsius) Warnings Major On Major Off Minor On Minor Off S25N 62 58 60 50 S25V 60 56 58 47 Use the show logging command to see the log messages. For details, see the logging chapters of the Command Reference and Configuration Guide. In a stack, each unit has its own temperature monitoring and control. Status logging is identified by unit in the system log. Fan replacement in the field is not offered as an option. 16 Site Preparation