Dell PowerConnect B-RX16 Installation Guide - Page 134

5 Managing the cooling system low - The system sets the fan speed to low. med - The system sets the fan speed to medium. med-high - The system sets the fan speed to medium-high. Monitoring the cooling system You can monitor the following aspects of the BigIron RX Series cooling system: • The temperature of the fan control modules • The status and speed of the fans • The temperature warnings sent to the system log and that generate an SNMP trap Displaying fan tray status and speed The CLI provides two commands that allow you to display the status and speed of the four-speed fans in the BigIron RX Series chassis. To display this information, you can enter the following command at any level of the CLI: BigIron RX# show chassis ... --- FANS --Right Fan Tray: Fan 5: Status = OK, Speed = LOW (50%) (RPM 3333) Right Fan Tray: Fan 6: Status = OK, Speed = LOW (50%) (RPM 3488)... Syntax: show chassis For information about all output generated by the show chassis command,refer to "Displaying chassis status and temperature readings" on page 113. TABLE 22 Fan status and speed fields This field... Displays... Status Speed The status can be one of the following: • OK - The fan is functioning properly and is keeping the temperature of each module within an acceptable temperature range. • Failed - The fan is not functioning properly or the fan control module cannot control the fan. The speed can be one of the following: • LOW - The fan is functioning at 50 percent of capacity • MEDIUM - The fan is functioning at 75 percent of capacity • MEDIUM-HIGH - The fan is functioning at 90 percent of capacity • HIGH - The fan is functioning at 100 percent of capacity Displaying temperature warnings If the temperature of a module exceeds the high temperature threshold for any of the fan speeds, the system sends a warning message to the system log and an SNMP trap. (For more information about the low and high temperature thresholds, refer to "Changing temperature thresholds for modules and fan speeds" on page 117.) This section describes how to view the system log. If you have configured the BigIron RX Series system to use a Syslog server or SNMP trap receiver, refer to the documentation for the server or receiver. 122 BigIron RX Installation Guide 53-1001811-01