Fan Tray Power Consumption - HP FlexFabric 12900E series Installation Manual

Model
LSXM1TGS24FX1
LSXM1GP48FX1
LSXM1QGS36FX1
LSXM1QGS24FX1
LSXM1QGS12FX1
LSXM1CGX8FX1
LSXM1CGP12FX1
LSXM1CGP8FX1
LSXM1TGT48FX1
LSXM1GT48FX1

Fan tray power consumption

The switch uses fan trays that can automatically adjust the fan speed based on the device
temperature. The power consumed by a fan tray depends on the fan speed.
Table 22 Fan tray power consumption
Switch model
12916E
12908E
12904E
System power consumption
The system power consumption of the switch depends on the type and number of cards and the fan
tray power consumption.
•
The minimum system power consumption is the total static power consumption of all cards plus
the minimum fan tray power consumption.
•
The maximum system power consumption is the total dynamic power consumption of all cards
plus the maximum fan tray power consumption.
For example, for a 12916E switch that has two LSXM1SUPB1 MPUs, two LSXM1QGS24FX1 LPUs,
six LSXM1SFF16B1 switching fabric modules, and two LSXM116XFAN fan trays, the minimum
system power consumption of the switch is 2 × 39 + 2 × 270 + 6 × 195 + 2 × 33 = 1854 W. The
maximum system power consumption of the switch is 2 × 50 + 2 × 465 + 6 × 240 + 2 × 793 = 4056 W.
Heat dissipation
Heat dissipation is measured in BTU/h, and 1 W equals 3.4121 BTU/h.
The heat dissipation of a switch depends on its power consumption. To calculate heat dissipation of
the switch, assume 90% power consumption is converted to heat, and the efficiency of the power
Minimum static power
consumption
86 W
115 W
396 W
270 W
143 W
286 W
388 W
253 W
160 W
122 W
Fan tray model
LSXM116XFAN
LSXM108XFAN
LSXM104XFAN
84
Maximum dynamic power
consumption
145 W
165 W
645 W
465 W
225 W
335 W
610 W
410 W
345 W
145 W
Minimum fan tray
power consumption
33 W
17 W
14 W
Maximum fan tray
power consumption
793 W
395 W
255 W