Mellanox Grid Director 4700 Installation Manual
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This formula provides margin for momentary power peaks and enhances reliability by
preventing the power subsystem from continuously operating at maximum power.
3.
For redundancy (N:1 or N:N), configure additional power supplies.
Table 10: Module Power Data
Mellanox Grid Director™ 4700
Description
Module Name
DC Power Consumption
[Watt] (*)
Basic chassis configuration
Single management board
Horizontal fan units
Vertical fan unit
Two power supply units
4700
sMB
sFU-40H
sFU-40V
2 x sPSU-S
675.0
sFB, 9-QDR-connections fabric board
sFB
990.0
sMB
sMB-CM
45.0
Modules for the Mellanox Grid Director™ 4700
Description
Module Name
DC Power Consumption [Watt]
sLB-4018, 18 QSFP ports per sLB-4018
sLB-4018
110.0
(*) Add 1.5 Watts for each connected QSFP optical module
Spare Parts for the Mellanox Grid Director™ 4700
Description
Module Name
DC Power Consumption
[Watt]
sFU-40H, Horizontal Fan Unit
sFU-40H
380.0
sFU-40V, Vertical Fan Unit
sFU-40V
250.0
3.10
Calculating Heat Output in BTUs
To compute the approximate BTUs for a given configuration, find the power consumption in
Watts (e.g., from Power Data Per Module;
see
), and multiply by 3.408. Example calculations
for specific configurations are shown in the following table.
Table 11: BTUs for QDR Sample Configurations
Configuration
Modules Included
Power (Watts)
Heat Output
(BTUs)
18 ports per sLB-4018
9 sFB-4700, 1 sLB-4018, 1 sFU-40H, 1
sFU-40V, 1 sMB, 2 sPSU-S
2,041W
6,965
108 ports (6 sLBs x 18
port per sLB)
9 sFB-4700, 6 sLB-4018, 1 sFU-40H, 1
sFU-40V, 1 sMB, 2 sPSU-S
2,674W
9,123
