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Dell PowerEdge M1000e Chassis Management Controller Firmware Version 5.1 User’s Guide

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Grid Redundancy Policy

The purpose of the Grid Redundancy policy is to enable a modular enclosure system to operate in a mode in which it can tolerate power failures. These failures may originate in the input power grid, the cabling and delivery, or a PSU itself.

When you configure a system for Grid Redundancy, the PSUs are divided into grids: PSUs in slots 1, 2, and 3 are in the first grid while PSUs in slots 4, 5, and 6 are in the second grid. CMC manages power so that if there is a failure of either grid the system continues to operate without any degradation. Grid Redundancy also tolerates failures of individual PSUs.

  • NOTE: Grid Redundancy provides seamless server operation despite failure of a whole power grid. Hence, the maximum power is available to maintain Grid Redundancy when the capacities of the two grids are approximately equal.
  • NOTE: Grid Redundancy is only met when the load requirements do not exceed the capacity of the weakest power grid.

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