InfiniBand FDR Switch Platform Hardware User Manual
Mellanox Technologies
40
allows for hot swapping a PSU should one fail. Connecting the PSUs to different AC
lines provides AC failover protection.
When using the 1600W PSUs, the minimum complement of power supply units to start
the chassis is 3 and the chassis will continue to run at full capacity with only 3 PSUs.
The system should continue to run and allow a hot swap of a defective PSU. Should
there not be enough power to keep all of the leafs running, MLNX-OS® may power
down some leafs. If this happens it may be necessary to reboot the chassis once the
defective PSU has been replaced. Two simple ways to reboot is to use the reboot com-
mand in the CLI or reboot through the Web GUI.
The power system will divide the current consumption by the number of working PSUs.
Should one of the PSUs fail, the total current consumption will then be divided by the
remaining working PSUs. When the failed PSU is hot swapped the new PSU will ramp
up and pass its share of current, so that the total current is always divided by the number
of working PSUs.
1. Plug in the power cords to the PSUs.
2. Plug the other end of the power cords into grounded outlets.
Figure 31: Multiple Power Inlets – Electric Caution Notification
3. Check the Status LEDs on all of the management modules and confirm that all of the
LEDs show status lights consistent with normal operation.
4. Check that none of the LEDs on the spines are yellow.
Make sure that the outlets and circuits will not be overloaded. Spread out the load over
at least two or three circuits or use a 3 phase circuit.
Any yellow or red status LEDs on any of the management modules is cause for con-
cern and must be dealt with immediately.
It can take up to 5 minutes to boot up the system. Turn off the system if any LEDs
remain red for more than 5 minutes.
CAUTION
Risk of electric shock and
energy hazard.
The PSUs are all independent.
Disconnect all power supplies to
ensure a powered down state
inside of the switch platform.
ACHTUNG
Gafahr des elektrischen Schocks.
Entferrnen des Netzsteckers
elnes Netzteils spannungsfrei.
Um alle Einhieten spannungsfrei
zu machen sind die Netzstecker
aller Netzteile zu entfernen
ATTENTION
Risque de choc et de danger
e’lectriques. Le de’branchment
d’une seule alimentation stabi-
lise’e ne de’branch uniquement
qu’un module “Alimentation
Stabilise’e”. Pour isoler com-
pletement le module en cause, Il
faut de’brancher toutes les ali-
mentations stabilise’es.
