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PSU Configuration

PSU Configuration allows users to set the redundancy mode and zero output for power supplies.

Figure 1. PSU Configuration
PSU Configuration

  1. Redundancy Mode

    • Redundancy Mode

      • No redundancy: System could be throttled or shut down if one or more power supplies are in faulty condition.

      • N+1: There is one properly installed power supply as the redundant power supply, so there is no impact on the system operation or performance if any one of the power supplies is in faulty condition, given that Oversubscription Mode is not enabled.

    • Oversubscription Mode

      Oversubscription Mode grants users access to extra power from the redundant power supply. When the redundancy fails, however, the power supply will shut down within one second if system power loading is not corrected. SMM2 will take the action for node throttling at such power emergency, while enclosure performance could be impacted.

      • Oversubscription mode is only applied with the N+1 redundancy mode enabled.

      • When enabled with the N+1 redundancy mode, the total available power will be equivalent to 1.2 times of the total power capacity of the N+1 redundancy mode.

    • Apply

      Click on the Apply tab after choosing the redundancy and oversubscription mode from the drop-down menu to activate selections.

    • PSU Status

      Click on the PSU Status tab to redirect to the Enclosure Rear Overview page to view the status of power supplies. Following are the supported policies:

      • DA240 Enclosure

        • Two power supplies:
          • No-redundancy
          • N+1 redundancy with oversubscription (OVS) mode
      • DW612 Enclosure

        • Six power supplies

          • No-redundancy
          • N+1 redundancy with oversubscription (OVS) mode

        • Nine power supplies

          • N+1 redundancy without oversubscription (OVS) mode

      • DW612S Enclosure

        • Six power supplies

          • No-redundancy
          • N+1 redundancy with oversubscription (OVS) mode

        • Nine power supplies

          • N+1 redundancy without oversubscription (OVS) mode

  2. Zero Output

    • Zero Output

      • The Zero Output mode is disabled by default and only available when the Redundancy Mode is enabled (N+1).

      • When the Zero Output mode is disabled, all of the power supplies will always be kept active.

      • Three scanning period are offered: 10/30/60 minutes. The shorter the scanning period, the faster SMM2 adjusts the number of hibernate power supplies to optimize power supply efficiency when system load changes. With shorter scanning period, power supplies are also turned on and off more frequently when system loading fluctuates, which could reduce the life of power supplies.

    • Apply

      Click on the Apply tab after choosing the scanning period from the drop-down menu to activate selections.