Dell Chassis Management Controller Version 3.10 for Dell EMC PowerEdge VRTX User's Guide

One PSU in each grid is the minimum configuration necessary for use as grid redundant. Additional configurations are possible with every combination that has at least one PSU in each grid. However, to make the maximum power available for use, the total power of the PSUs in each leg should be as close to equal as practical. The upper limit of power while maintaining Grid redundancy is the power available on the weakest of the two grids.

If a CMC is unable to maintain Grid redundancy, an e-mail and/or SNMP alert is sent to administrators, if the Redundancy Lost event is configured for alerting.

In the event of a single PSU not functioning in this configuration, the remaining PSUs in the problematic grid are marked as online. In this state, the PSUs in the Redundant Grid if not in failed state, help in functioning of the system without interruption. If a PSU stops functioning, the chassis health is marked non-critical. If the smaller grid cannot support the total chassis power allocations, then Grid redundancy status is reported as No, and the health of chassis is displayed as Critical.