Using Power Supplies--Modular Switches Only

ExtremeXOS monitors and manages power consumption on the switch by periodically checking the power supply units (PSUs) and testing them for failures.

To determine the health of the PSU, ExtremeXOS checks the voltage, current, and temperature of the PSU.

The power management capability of ExtremeXOS:

Protects the system from overload conditions.
Monitors all installed PSUs, even installed PSUs that are disabled.
Enables and disables PSUs as required.
Powers up or down I/O and/or Fabric modules based on available power and required power resources.
Logs power resource changes, including power budget, total available power, redundancy, and so on.
Detects and isolates faulty PSUs.

The switch includes two power supply controllers that collect data from the installed PSUs and report the results to the MSM/MM modules. When you first power on the switch, the power supply controllers enable a PSU. As part of the power management function, the power controller disables the PSU if an unsafe condition arises. For more information about the power supply controller, refer to the hardware documentation which listed in GUID-824CFC84-F07E-4691-BA46-54553EC2921A.

If you have a BlackDiamond 8000 series Power over Ethernet (PoE) I/O module installed in a BlackDiamond 8800 series switch, there are specific power budget requirements and configurations associated with PoE that are not described in this section. For more detailed information about PoE, see PoE.

ExtremeXOS includes support for the 600/900 W AC PSU for the BlackDiamond 8806 switch.

You can mix existing 700/1200 W AC PSUs and 600/900 W AC PSUs in the same chassis; however, you must be running ExtremeXOS 11.6 or later to support the 600/900 W AC PSUs. If you install the 600/900 W AC PSU in a chassis other than the BlackDiamond 8806, ExtremeXOS provides enough power to boot-up the chassis, display a warning message in the log, and disable the PSU. If this occurs, you see a message similar to the following:

<Warn:HAL.Sys.Warning>MSM-A:Power supply in slot 6 is not supported and is being disabled.

When a combination of 700/1200 W AC PSUs and 600/900 W AC PSUs are powered on in the same BlackDiamond 8806 chassis, all 700/1200 W AC PSUs are budgeted “down” to match the lower powered 600/900 W AC output values to avoid PSU shutdown. For more information about the 600/900 W AC PSU, refer to the hardware documentation listed in GUID-824CFC84-F07E-4691-BA46-54553EC2921A.

Published March 2020prev | next

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