InfiniBand FDR Switch Platform Hardware User Manual
Mellanox Technologies
86
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 19 assumes the QSFP cable power consumption specified in Table 20. Please note
that QSFP module power is related to the module itself and is not referenced to AC
plane.
To calculate the total power consumption of the switch system at a certain configuration,
fill out Table 21 in the following manner:
1. In the Power column fill in the desired typical or maximum values.
Be careful not to mix FDR and FDR10 power numbers for the particular calculation.
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
multiplication products.
Table 19 - Power Consumption of Chassis Parts
Part
Typical (W)
Maximum (W)
IB FDR leaf with passive cables
109.5
111.4
IB FDR leaf with 18 active cables
150.6
157.9
IB FDR leaf with 18 optical cables
156.1
166.2
Spine FDR
128.6
135.2
IB FDR10 leaf with passive cables
84.4
97.1
IB FDR10 leaf with 18 active cables
125.5
143.6
IB FDR10 leaf with 18 optical cables
131.0
151.8
Spine FDR10
103.5
120.8
Chassis fans
163.3
188.2
Management module
17.6
25.9
Table 20 - QSFP Cable Power Consumption
QSFP Cable Type
Typical (W)
Maximum (W)
Active
1.5
1.7
Optical
1.7
2.0
Table 21 - Calculating Total Switch System Power Consumption
Part
Quantity
Power
Quantity x Power
IB FDR or FDR10 leaf with passive cables
IB FDR or FDR10 leaf with active cables
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