HP DL320 hp ProLiant DL320 generation 2 server high-density deployment - Page 18

hp ProLiant DL320 generation 2 server high-density deployment technical white paper 18 suggested rack configurations Listed in Table 10 is a Quick Reference table with suggested rack configurations for deploying the ProLiant DL320 Generation 2 servers. Examples of these configurations are given in the "Configuration A", "Configuration B", and "Configuration C" sections of this paper. Table 10. Suggested Rack Configurations Quick Reference Configuration Priority Rack Size Server Count Power Source Rack Level Power (derated) PDU KVM IP Connections A Maximum Performance Density 42U 42 High Voltage 9996W B Maximum Flexibility 42U 35 Low Voltage 8750W 2x40 Amp Modular PDU 2x40 Amp Dual Input PDU No Local KVM Console 52x8 Port KVM Switch 6x16 Port Switch (0+16) for 2x24 Port Switch (0+16) for Data Data C Traditionalist 42U 28 Low Voltage 7000W 4x24 Amp Dual Input PDU configuration A: maximum performance density (42 derated servers, 24 A high voltage) This configuration shows a "best practice" for a 42U rack with 42 servers in a high-voltage facility where a deployment plan can accommodate the derating of each server. The "power and thermal budgeting" section of this paper explains power budgeting methods and measured power for different base-line configurations and subsystem components. The following calculation verifies supporting 42 servers with 24 A high-voltage PDUs: Since there are 2 PDUs to support 42 servers, each PDU needs to support 21 servers. A 24 A high-voltage PDU supporting 21 servers can allocate each server with a maximum current of 24/21 = 1.143 A at 208 V. Therefore, the allocated maximum input power for each server will be: 1.143 A * 208 V = 238 W The maximum thermal dissipation per server will be: 238 W * 3.41 = 812 BTUs/hour For 42 servers, the total thermal dissipation will be 812*42 = 34,104 BTUs/hour. In the "power and thermal budgeting" section, a fully configured system was measured to consume lower than 250 W (Table 3, server configuration 4). If each derated server configuration input power is lower than 238 W, then 42 servers can be supported with this configuration summary.