Installation guide

D000024-000 Rev. A A-3
Q
❥ Fan Tray:
Hot plug with two axial, brushless, 12V fans per Fan Tray
❥ Chassis airflow:
Front-to-back
❥ Power supply airflow:
Power supplies intake air from a pressurized chamber inside a chassis and
exhaust to the front of a chassis. In the 9020, exhausted air from power
supplies is then routed to the back of a chassis through a return duct integrated
into a front fascia.
❥ Thermal management:
Temperatures of all major heat producing components are continuously
monitored by system management modules. Fan speed is monitored and
automatically adjusted by system management modules to maintain
appropriate temperatures of major heat producing components. Monitoring
is performed via a two wire I2C interface to each Fan Tray.
Table A-3. 9000 Product Configurations
Model # 9240 9120 9080 9040 9020
Maximum
InfiniBand
Ports
288 144 96 48 22
Maximum
Leaf Modules
24 12 8 4 1
Maximum
Spine
Modules
(9040, 9080,
9120, 9240)
6 3 2 1 0
Fan Trays 8 4 4 2 2
Power
Supplies
12 6 6 4 2
Management
Modules
(9020)
0 0 0 0 2