10-15-2023
06:12 PM
- last edited on
10-15-2023
06:17 PM
by
CiscoKoreaModer
Hi everyone,
I have a question about nexus 9805 power redundancy.
It uses 3000w AC power and is connected to power supply slots 1, 2, 3, and 4.After testing the equipment, I found that the module worked properly when three power sources were connected.
It is confirmed that power is insufficient because the power supply redundancy mode is PS-Redundant.
I want to have redundancy with 4 power sources even if 2 power supplies go out.
So the way I thought about it was
1. Change power supply combine mode
2. Move the power supply to number 3 4 power supply 5 6
3. So, even if power supplies 1 and 2 on one side go out, are all modules normal when you run show module?
10-16-2023 05:19 AM
the power redundancy design is different than what your desire
look at Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide, Release 6.x - System-Level High Availability [Cisco Nexus 9000 Series Switches] - Cisco
Table 1. Power Redundancy Modes
Redundancy Mode
Description
Combined (nonredundant)
This mode does not provide power redundancy. The available power is the total power capacity of all power supplies.
insrc-redundant (grid redundancy)
This mode provides grid redundancy when you connect half of the power supplies to one grid and the other half of the power supplies to the second grid. The available power is the amount of power available through a grid.
To enable grid redundancy, you must connect the power supplies to the correct power grid slots. For example, on the Cisco Nexus 9508 switch, slots 1, 2, 3, and 4 are in grid A, and slots 5, 6, 7, and 8 are in grid B. To configure and operate in grid redundancy mode, you must connect half of your power supplies to the slots in grid A and the rest of your power supplies to the slots in grid B. For more information on power grid slot assignments for your power supplies, see the Hardware Installation Guide for your specific Cisco Nexus 9000 Series platform.
ps-redundant (N+1 redundancy)
This mode provides an extra power supply if an active power supply goes down. One power supply of all the available power supplies is considered an extra power supply, and the total available power is the amount provided by the active power supply units.
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