Overview
Configuration F
Figure 1-7 illustrates a redundant configuration in which servers with dual power supplies are protected by multiple UPSs. One server is serially attached to a UPS. The first server and a second UPS are connected directly to the network. One server power supply is connected to a receptacle on the rear panel of each UPS. Each UPS is connected to a separate power feed. The UPSs are monitored by a Management Server located elsewhere on the network.
IMPORTANT: When planning a redundant configuration, consider that in normal operating conditions, servers with multiple power supplies equally distribute the power load across each power feed. A server with two power supplies applies 50% of the load to each power feed. In the event that one power feed fails, the second power feed must be able to handle 100% of the load. Ensure that each UPS in the redundant configuration can support the entire load in the event of a power failure.
Redundant UPS configurations should be tested thoroughly to ensure the load handling capabilities and power fail settings of each UPS before an actual power failure event.
HP Rack and Power Manager User Guide |
