Reference Guide

-- Power Supplies --
Unit Bay Status Type FanStatus FanSpeed(rpm) Power Usage (W)
-----------------------------------------------------------------------------
0 0 down AC up 1376 0.0
0 1 up AC up 18848 666.0
0 2 down AC up 1312 0.0
0 3 up AC up 18880 643.0
When an under-voltage condition occurs on a power supply (for example, a power cable is removed):
● A Syslog message is displayed to inform you that the power supply is down. The power supply number (for example, power
supply 0) indicates the chassis bay in which it is installed; chassis bays are numbered 0 to 4, starting from the leftmost
bay 0. unit 0 refers to the switch itself.
Dell#00:20:34: %SYSTEM:CP %CHMGR-0-PS_DOWN: Major alarm: Power supply 0 in unit 0 is
down
Dell#00:20:53: %SYSTEM:CP %CHMGR-0-PS_DOWN: Major alarm: Power supply 2 in unit 0 is
down
● Use the show alarms command to display power-supply alarm messages.
Dell#show alarms
...
-- Major Alarms --
Alarm Type Duration
---------------------------------------------------------------------------
PEM 0 in unit 0 down 25 sec
PEM 2 in unit 0 down 6 sec
● Use the show environment pem command to display complete information on power supply operation.
Dell#show environment pem
-- Power Supplies --
Unit Bay Status Type FanStatus FanSpeed(rpm) Power Usage (W)
-----------------------------------------------------------------------------
0 0 down AC up 1376 0.0
0 1 up AC up 18848 666.0
0 2 down AC up 1312 0.0
0 3 up AC up 18880 643.0
Total power: 1309.0 W
Display Fan Status
To monitor the status of fan operation, use the show environment fan command.
The command output displays the operational status of each fan, including tray status, and speed of each fan.
Dell#show environment fan
-- Fan Status --
Unit Bay TrayStatus Fan0 Speed Fan1 Speed
------------------------------------------------------------------------------------
0 0 up up 5263 up 5292
0 1 up up 5274 up 5317
0 2 up up 5256 up 5292
0 3 up up 5278 up 5328
0 4 up up 5270 up 5320
Speed in RPM
Debugging and Diagnostics
255