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PFE1100-12-054NA White Paper Issue 6
Ef?ciency in the Data Center.
In 2006, Larry Page, Google’s cofounder, stated "running out of power" as the biggest potential threat to
Google, and the electricity needed to run its "server farms" - tens of thousands of power-hungry computers
storing billions of internet pages - could soon cost more than the hardware. Now in 2010 that statement
carries more truth than could ever have been imagined.
The cost of energy is higher than ever before, considering over half the energy cost to run a server goes
towards cooling. The cost of running a typical volume server over ?ve years can exceed the original product
cost.
There is some data from Microsoft to support that for every watt saved, between $4 to $5 can be saved over a
?ve-year period, depending on cost per kWh from the utility company. It may not sound very high, but for
data centers with thousands of servers it is a considerable savings.
PUE and DCIE
All data centers refer to PUE (Power Usage Effectiveness), or DCIE (Data Center Infrastructure Ef?ciency).
Both are metrics to determine a data center ’s ef?ciency. With a PUE of 2.0, for every 1 watt used, 1 watt is
also consumed in distributing the power and cooling the data center.
With constantly varying server loads, storage and virtual server load balancing, the PUE is a constantly
changing entity. PUE is affected by everything in the data center, chillers, cooling towers, pumps, humidi?-
ers, lighting, PDU’s and air conditioning. The IT equipment in the equation consists of servers, storage and
network switchers, routers , etc.
Assuming a data center used 100,000 kWh of power of which 80,000 kWh is used to power the IT equipment.
100,000 kWh / 80,000 kWh gives a PUE of 1.25. Likewise, DCIE takes 80,000 kWh / 100,000 kWh = 0.8.
Table 3 de?nes the PUE ef?ciency.
Table 3. PUE and DCIE Criteria
P e r i t u s P o w e r !
PUE
3.0
2.5
2.0
1.5
1.2
DCIE
33%
40%
50%
67%
83%
6
EFFICIENCY
Very Inef?cient
Inef?cient
Average
Ef?cient
Very Ef?cient
P o w e r - O n e I N C . 1 U P F E 11 0 0 - 1 2 - 0 5 4 N A P l a t i n u m
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相关PDF资料
PFE1100-12-054ND FRONT END 1100W 12V HI EFFICINCY
PFE500S-28/T PWR SUP AC/DC 85-265VAC 28V
PFE700S-48 PWR SUP AC-DC 85-265VAC 51V 14A
PFE850-12-054RA FRONT END 850W 12V HI EFFICIENCY
PGB1040805NR SUPPRESSOR ESD 24VDC 0805 SMD
PGB2010402KRHF SUPPRESSOR ESD 12VDC 0402 SMD
PHW603616 BOX FIBER 63.5X36.5X18.1" GREY
PI-1902 BOX ABS 1.26" X 1.97" X 3.54"GRY
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