Thermal Power Management Device Card - IBM Power 720 Overview

savings mode of its hosting server. By default, all partitions with dedicated processing
units, and the system processor pool, are set to the inherit host setting.
On POWER7 and POWER7+ processor-based systems, several EnergyScale
technologies are imbedded in the hardware and do not require an operating system or
external management component. More advanced functionality requires Active Energy
Manager (AEM) and IBM Systems Director.
Table 2-31 lists all features that are supported, showing all cases in which AEM is not
required, and also details the features that can be activated by traditional user interfaces
(for example, ASMI and HMC).
Table 2-31 AEM support
Feature
Power Trending
Thermal Reporting
Static Power Saver
Dynamic Power Saver
Power Capping
Energy-optimized Fans
Processor Core Nap
Processor Core Sleep
Processor Winkle mode
Processor Folding
EnergyScale for I/O
Server Power Down
Partition Power
Management
The Power 720 and Power 740 systems implement all the EnergyScale capabilities listed in
2.13.1, "IBM EnergyScale technology" on page 108.

2.13.2 Thermal power management device card

The Thermal power management device (TPMD) card is a separate micro controller that is
installed on some POWER6 processor-based systems, and available on all POWER7 and
POWER7+ processor-based systems. It runs real-time firmware whose sole purpose is to
manage system energy.
The TPMD card monitors the processor modules, memory, environmental temperature, and
fan speed. Based on this information, it can act upon the system to maintain optimal power
and energy conditions (for example, increase the fan speed to react to a temperature
change). It also interacts with the IBM Systems Director Active Energy Manager to report
power and thermal information and to receive input from AEM on policies to be set. The
TPMD is part of the EnergyScale infrastructure.
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IBM Power 720 and 740 Technical Overview and Introduction
AEM required ASMI
Yes No
Yes No
No Yes
Yes No
Yes No
No -
No -
No -
No -
No -
No -
Yes -
Yes -
HMC
No
No
Yes
No
No
-
-
-
-
-
-
-
-