InfiniBand FDR Switch Platform Hardware User Manual
Mellanox Technologies
43
1.10.1 Power Supply Units
The 1000W power supplies deliver 1000W at 48V. The input to each of these power sup-
plies requires 1176.5W in order to output 1000W.
The 1600W power supplies deliver 1600W at 48V. The input to each of these power sup-
plies requires 1882.4W in order to output 1600W.
For N+2 configuration PSUs (Power Supply Unit) can be extracted without bringing
down the system.
For N+N configuration up to half of the PSUs can go down and the system will continue
to run.
The power required to run the switch system is equally divided between all of the work-
ing PSUs.
1.10.1.1 Extracting and Inserting the Power Supply Unit
With all of the 1000W power supplies installed, the system is in N+1 redundant configu-
ration.
With all of the N+N 1600W power supplies installed, the system is in N +N redundant
configuration, half of the PSUs may be extracted without bringing down the system.
To extract a PSU:
1. Determine which AC connector on the connector side of the chassis corresponds to
the defective PSU.
2. Remove the power cord from the power supply unit. Note which power cord it is
according to the AC numbering.
Figure 33: Power Cord Numbering
3. On the spine side of the chassis, remove the cover to the power supply unit for the
non-working PSU. Odd numbered PSUs are on the left side and even numbered PSUs
are on the right side facing the spines.There are four phillips head screws for the
cover plate.
Figure 34: Power Supply
4. Grasping the handle with one hand, push the black latch release while pulling the
handle outward. As the PSU unseats, the PSU status indicators will turn off.
5. Remove the PSU.
To insert a PSU:
1. Make sure the mating connector of the new unit is free of any dirt and/or obstacles.
AC1
AC2
AC3
AC4
AC5
AC6
DC
AC
OK
FAIL
OK
Handle
Latch
