Dell PowerEdge M420 Hardware Owner's Manual - Page 265

4 Installing Enclosure Components NOTE: To ensure proper operation and cooling, all bays in the enclosure must be populated at all times with either a module or with a blank. Power Supply Modules The M1000e enclosure supports up to six hot-swappable power supply modules, accessible from the enclosure back panel. NOTE: The 2360 W and 2700 W power supply modules require 200-240 V input from a PDU. If the power supply modules are plugged into 110 V electrical outlets, the system provides 2200 W AC input power if you select the Allow 110 VAC Operation check box in the CMC Power Configuration screen. NOTE: The power supply modules have internal fans that provide thermal cooling to these modules. A power supply module must be replaced if an internal fan failure occurs. System Power Guidelines Your system has one of the following power supply configurations: • Three 2360 W or three 2700 W power supply modules, which do not provide redundancy if one power supply module fails. The power supplies are installed in bays 1 through 3. • Six 2360 W or six 2700 W power supply modules, which provide redundancy if up to three power supply modules fail. The CMC module controls power management for the system. You can program the CMC to configure the power budget, redundancy, and dynamic power of the entire enclosure (chassis, servers, I/O modules, iKVM, CMC, and power supplies). The power management service optimizes power consumption and re-allocates power to different modules based on real-time demand. For more information, see "Power Management" in the Dell Chassis Management Controller User's Guide. NOTE: The wattage of a power supply module is listed on its regulatory label. Installing Enclosure Components 265