Mellanox Technologies Switch-IB, User Manual

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101 Mellanox Technologies
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
Part Typical (W) Maximum (W)
IB EDR leaf with passive cables 322 335
IB EDR leaf with 36 optical cables 483 496
Spine 163 170
Chassis fans 444 444
Management module 250 250
Table 18 assumes the QSFP cable power consumption specified in Table 19 . Please note that
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 Typical (W) Maximum (W)
Optical 3.5 3.5
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
Part Quantity Power Quantity x Power
IB EDR leaf with passive cables
IB EDR leaf with optical cables
Spine
Chassis fans 1
Management module
Total power