HP ProLiant SL270s HP ProLiant SL Servers Planning Guide - Page 33

Configuration scenarios, Example configurations, Estimating power and cooling

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Configuration scenarios Example configurations Configuration examples can be calculated using the HP Power Advisor Tool (http://www.hp.com/go/hppoweradvisor). This tool is designed for facilities planning purposes only. Values obtained from the tool are based on worst case loads. Whenever possible, HP recommends using actual measurements in configuration planning. Measurements must be made with the intended configuration, application loading, and ambient environment. Actual power usage will vary, depending on application loading, ambient temperature, and other factors. Estimating power and cooling Power consumed by a HP ProLiant SL server is converted to heat, which is expressed in Btu/h. You can calculate the heat load for a system by using the following equation: Heat Load = Power (W) x 3.413 Btu/h. In the preceding equation, 1 W equals 3.413 Btu/h. The installation of a HP ProLiant SL server solution into a computer room containing existing systems might have a significant impact on cooling requirements. HP Data Center Services provides consultation to assist you in developing an efficient high-density cooling strategy by using dynamic modeling. For more information, contact your HP sales representative. A complete discussion of cooling requirements is beyond the scope of this guide. For more information, see the following sources: • Technology Brief TC050901TB Optimizing facility operation in high density data center environments, 2nd edition available on the HP website (http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00064724/c00064724.pdf). • Best practices for HP 10000 Series and HP 10000 G2 Series Racks, available on the HP website (http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00883424/c00883424.pdf). The budget allowed for modern servers should include at least 4 kW of actual power use per enclosure at maximum configuration. Using modern day kW/cabinet to W/sf conversion ratios this equates to approximately 90 W/sf for each single chassis. Placing just three chassis into a rack equates to a power density of at least 250 W/sf. When planning upgrades to older data centers to add servers, plan to upgrade the electrical and mechanical infrastructure to properly support the added electrical and cooling requirements. New data center planning for HP ProLiant SL servers must specify a minimum of 250 W/sf or 12 kW/cabinet power densities. To estimate computer-room cooling requirements, first calculate the amount of energy used by the solution. HP provides online power-consumption calculators that enable you to configure a virtual rack and determine its power consumption. For more information, see the HP website (http://h18004.www1.hp.com/products/solutions/power). For other models, obtain the power consumption data from the component specifications. Configuration scenarios 33

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Configuration scenarios 33
Configuration scenarios
Example configurations
Configuration examples can be calculated using the HP Power Advisor Tool
(
). This tool is designed for facilities planning purposes only.
Values obtained from the tool are based on worst case loads. Whenever possible, HP recommends using
actual measurements in configuration planning. Measurements must be made with the intended
configuration, application loading, and ambient environment.
Actual power usage will vary, depending on application loading, ambient temperature, and other factors.
Estimating power and cooling
Power consumed by a HP ProLiant SL server is converted to heat, which is expressed in Btu/h. You can
calculate the heat load for a system by using the following equation: Heat Load = Power (W) x 3.413 Btu/h.
In the preceding equation, 1 W equals 3.413 Btu/h. The installation of a HP ProLiant SL server solution into
a computer room containing existing systems might have a significant impact on cooling requirements. HP
Data Center Services provides consultation to assist you in developing an efficient high-density cooling
strategy by using dynamic modeling.
For more information, contact your HP sales representative.
A complete discussion of cooling requirements is beyond the scope of this guide. For more information, see
the following sources:
•
Technology Brief TC050901TB
Optimizing facility operation in high density data center environments,
2nd edition
available on the HP website
(
).
•
Best practices for HP 10000 Series and HP 10000 G2 Series Racks
, available on the HP website
(
).
The budget allowed for modern servers should include at least 4 kW of actual power use per enclosure at
maximum configuration. Using modern day kW/cabinet to W/sf conversion ratios this equates to
approximately 90 W/sf for each single chassis.
Placing just three chassis into a rack equates to a power density of at least 250 W/sf. When planning
upgrades to older data centers to add servers, plan to upgrade the electrical and mechanical infrastructure
to properly support the added electrical and cooling requirements. New data center planning for HP ProLiant
SL servers must specify a minimum of 250 W/sf or 12 kW/cabinet power densities.
To estimate computer-room cooling requirements, first calculate the amount of energy used by the solution.
HP provides online power-consumption calculators that enable you to configure a virtual rack and determine
its power consumption. For more information, see the HP website
(
).
For other models, obtain the power consumption data from the component specifications.