1.10.1 Power Supply Units; Figure 32: Power Cord Numbering - Mellanox Technologies MSX6536-10R Hardware Installation Manual

InfiniBand FDR Switch Platform Hardware User Manual
This switch platform supports hot swap capabilities for the parts listed below.
• Power supply units
• Leaf boards
• Spine boards
• Leaf fan module
• Spine fan module
• Management modules

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.
AC1
AC6
Mellanox Technologies
When hot-swapping any of the units, it is necessary to wait 1 minute after removing
the defective part before inserting the new part. This is necessary so that the manage-
ment module will start a new cycle checking through the leafs and spines for the FW
versions.

Figure 32: Power Cord Numbering

AC2
AC7
AC3 AC4
AC8 AC9
Rev 1.7
AC5
AC10
41