Appendix D Calculating The Power Of A Chassis; Table 18: Power Consumption Of Chassis Parts; Table 19: Qsfp Cable Power Consumption; Table 20: Calculating Total Switch System Power Consumption - Mellanox Technologies Switch-IB User Manual

Appendix D: Calculating the Power of a Chassis
To calculate the power consumption of a chassis add the power of the fans, spines, leafs, and
management modules.
Table 18 - Power Consumption of Chassis Parts
IB EDR leaf with passive cables
IB EDR leaf with 36 optical cables
Spine
Chassis fans
Management module
Table 18 assumes the QSFP cable power consumption specified in
QSFP module power is related to the module itself and is not referenced to AC plane.
Table 19 - QSFP Cable Power Consumption
QSFP Cable Type
Optical
To calculate the total power consumption of the switch system at a certain configuration, fill out
Table 20 in the following manner:
1. In the Power column fill in the desired typical or maximum values.
2. In the Quantity column, fill in the desired configuration.
Please note that the number of fans is not configurable and is always 1.
3. Get the total power per each FRU by multiplying values in adjusted columns in the same row.
4. Get the total switch system power consumption system power by summing up all multiplica-
tion products.
Table 20 - Calculating Total Switch System Power Consumption
IB EDR leaf with passive cables
IB EDR leaf with optical cables
Spine
Chassis fans
Management module
Total power
Mellanox Technologies
Part
Typical (W)
3.5
Part
Typical (W) Maximum (W)
322 335
483 496
163 170
444 444
250 250
Table
Maximum (W)
3.5
Quantity Power
1
19. Please note that
Quantity x Power
101