80 Installing System ComponentsNOTE: When installing, hot-swapping, or hot-adding a new power supply in asystem with two power supplies, allow several seconds for the system to recognizethe power supply and determine its status. The power-supply status indicator turnsgreen to signify that the power supply is functioning properly (see Figure 1-5).Removing the Power Supply BlankIf you are installing a second power supply, remove the power supply blankin bay PS2 by pulling outward on the blank.CAUTION: To ensure proper system cooling, the power supply blank mustbe installed in power supply bay PS2 in a redundant configuration. Remove thepower supply blank only if you are installing a second power supply.Installing the Power Supply BlankNOTE: Install the power supply blank only in power supply bay PS2.To install the power supply blank, align the blank with the power supply bayand insert the blank into the chassis until it clicks into place.System MemoryYour system supports DDR3 registered DIMMs (RDIMMs) or unbufferedECC DIMMs (UDIMMs). Single and dual-rank DIMMs can be 1067- or1333-MHz, and quad-rank DIMMs can be 1067-MHz.The system contains eight memory sockets split into two sets of four sockets,one set per processor. Each four-socket set is organized into three channels.Two DIMMs for channel 0 and a single DIMM for channel 1 and 2. The firstsocket of each channel is marked with white release levers.
