HP ProLiant DL380p HP Power Regulator for ProLiant servers - Page 11

Dynamic, Static High Performance, Processor utilization percent, Power Watts, efficiency - proliant dl380

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Figure 4. Effective power consumption of Dynamic Power Savings and Static High Performance modes on a DL380 G7 server at various system loads 300 250 Power (Watts) 200 16 W 150 100 50 0 0 10 20 30 40 50 60 70 80 90 100 Processor utilization (percent) Dynamic Static High Performance Table 3 shows the estimated cost savings of $28.03 per year on this system under 60% application loads in Dynamic Power Savings mode compared to Static High Performance mode. Actual savings vary depending on system configuration, processor utilization, data center power and cooling efficiency, and electricity cost. The cost savings should scale linearly with the number of servers and create significant savings for large data center operations. Table 3. Calculated annual power cost savings for an HP ProLiant DL380 G7 server running the 60% average workload shown in Figure 4 Parameter Calculation Savings Power saved 16 W PUE* = 2.0 2.0 x 16 W 32 W (or 0.032 kW) Annual energy saved 0.032 kW x 24 hrs/day x 365 days/yr 280.32 kWh/yr Dollars saved (at 10 cents per kWh) 280.32 kWh/yr * $0.10) $28.03/yr * The Power Usage Effectiveness (PUE) metric describes data center power and cooling energy efficiency. A PUE of 2.0 is a typical level of energy efficiency in today's data centers. 11

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Figure 4.
Effective power consumption of Dynamic Power Savings and Static High Performance modes on a
DL380 G7 server at various system loads
0
50
100
150
200
250
300
0
10
20
30
40
50
60
70
80
90
100
Dynamic
Static High Performance
Processor utilization (percent)
Power (Watts)
16 W
Table 3 shows the estimated cost savings of $28.03 per year on this system under 60% application
loads in Dynamic Power Savings mode compared to Static High Performance mode. Actual savings
vary depending on system configuration, processor utilization, data center power and cooling
efficiency, and electricity cost. The cost savings should scale linearly with the number of servers and
create significant savings for large data center operations.
Table 3.
Calculated annual power cost savings for an HP ProLiant DL380 G7 server running the 60% average
workload shown in Figure 4
Parameter
Calculation
Savings
Power saved
16 W
PUE* = 2.0
2.0
x 16 W
32 W (or 0.032 kW)
Annual energy saved
0.032 kW x 24 hrs/day x
365 days/yr
280.32 kWh/yr
Dollars saved (at 10 cents
per kWh)
280.32 kWh/yr * $0.10)
$28.03/yr
* The Power Usage Effectiveness (PUE) metric describes data center power and cooling energy efficiency. A PUE
of 2.0 is a typical level of energy efficiency in today’s data centers.