Powering Up The Switch Platform; Figure 30: Multiple Power Inlets - Electric Caution Notification - Mellanox Technologies MSX6536-10R Hardware Installation Manual

InfiniBand FDR Switch Platform Hardware User Manual
on the spine side. The left side has odd numbered PSUs and the right side has even num-
bered PSUs. Each PSU has a dedicated AC inlet. This design enables the optional use of
separate main and backup AC feeds. The input voltage is Autorange, 100-240 VAC,
50Hz or 60Hz. The output voltage for the PSUs is 48V. The power cords should be stan-
dard 3-wire AC power cords including a safety ground.
1.8.1

Powering Up the Switch Platform

The chassis in N+1 mode must be started with a full complement of PSUs, thereafter it
can run on one less than the total number of PSUs. This final PSU is redundant and
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 5 and the chassis will continue to run at full capacity with only 5 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 30: Multiple Power Inlets – Electric Caution Notification
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.
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Make sure that the power cords are compatible with your outlets. Power cords for dif-
ferent countries can be ordered from Mellanox.
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.
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.
Rev 1.7
38