Compaq BL10e - HP ProLiant - 512 MB RAM Introduction Manual page 13

Table 1. BladeSystem c-Class thermal-related technologies
Technology Description
Active Cool Active Cool fans use ducted fan technology with a high-
Fans performance motor and impeller to deliver high CFM at high
pressure. Active Cool fans are controlled by the c-Class Onboard
Administrator. The Onboard Administrator can ramp cooling
capacity up or down based on system needs. Along with
optimizing the airflow, the control algorithm optimizes the acoustic
levels and power consumption.
Parallel In this context, parallel means that fresh, cool air flows over all the
Redundant blades (in the front of the enclosure) and all the interconnect
Scalable modules (in the back of the enclosure). The enclosure and the
Enclosure components within it optimize the cooling capacity through unique
Cooling mechanical designs such as fan louvers, an airtight center plenum,
design and device bay shutoff doors. Redundant refers to the four cooling
(PARSEC) zones that provide direct cooling for server blades in their
respective zone and redundant cooling for adjacent zones.
Scalable refers to the capability to scale the number of Active
Cool fans depending on how many and what type of server
blades are installed.
Instant If the enclosure's thermal load increases, the Onboard
Thermal Administrator instructs the fan controllers to increase fan speeds to
Monitoring accommodate the additional demand. It also works in reverse,
using all the features of Thermal Logic to keep fan and system
power at the lowest level possible. Onboard Administrator
monitors the thermal conditions on the hardware in real time,
without a delay for a polling cycle.
Power pooled All the power in the enclosure is provided as a single pool that
for N+N any blade can access, providing increased flexibility when
power configuring the power in the system so that customers can choose
redundancy the level of redundancy they require. Because this power design
has no zones, it facilitates both N+N and N+1 power modes.
Dynamic Most power supplies operate more efficiently when heavily
Power Saver loaded and less efficiently when lightly loaded. Dynamic Power
Mode (power Saver mode provides power supply load shifting for maximum
supplies) efficiency and reliability. Dynamic Power Saver runs the required
power supplies at a higher use rate and puts unneeded power
supplies in standby mode.
When enabled through Onboard Administrator, the total
enclosure power consumption is monitored in real time and
automatically adjusted with changes in demand.
Power Provides Integrated Lights-Out-controlled speed stepping for x86
Regulator processors. The Power Regulator feature improves server energy
(processors) efficiency by giving CPUs full power for applications when they
need it and reducing power when they do not.
Allows ProLiant servers with policy-based power management to
control processor power states. Power Regulator can be
configured for continuous, static low power mode or for Dynamic
Power Savings mode. In Dynamic Power Savings mode, Power
Regulator determines the amount of time each processor in the
system is spending in the operating system's idle loop. It allows
the processors to operate in a low power state when high
processor performance is not needed and in a high power state
when high processor performance is needed.
Design Aspects
Efficient hardware
Efficient hardware
Accurate
measurement
Real-time
analysis/optimization
Efficient hardware
Efficient hardware
Accurate
measurement
Real-time
analysis/optimization
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