Docstoc

Efficient Energy Management: Microsoft System Center Configuration Manager 2007 R3

Document Sample
Efficient Energy Management: Microsoft System Center Configuration Manager 2007 R3 Powered By Docstoc
					Effective Energy Management
Microsoft® System Center Configuration Manager
2007 R3


White Paper

Microsoft Corporation
March 2010


For the latest information, go to
www.microsoft.com/systemcenter




Effective Energy Management: System Center Configuration Manager 2007 R3   i
Effective Energy Management: System Center Configuration Manager 2007 R3   ii
Abstract
For many years, IT client power management has been an area of challenge for many organizations. While
energy-saving desktop and laptop hardware has been available for some time, power-saving settings are often
disabled out of fears of data corruption, to support nightly IT operations, or simply from force of habit. Indeed,
the U.S. Environmental Protection Agency estimates that no more than 10 percent of all Enterprise PCs in use
have their power management capabilities turned on—a staggering statistic considering the headway that has
been made in other areas of power reduction in the data center and in building facilities. At the same time, over
80 percent of desktops in most organizations are completely idle after 6:30 P.M. Quite literally, ―The lights are
on, but no one‘s home.‖ All of this contributes to the inability of organizations to take advantage of the energy
savings, carbon output reductions, and significant cost savings that are possible with enterprise power
management.

System Center Configuration Manager 2007 R3 provides a comprehensive set of power management tools to
enable centralized client power management without introducing unnecessary risks of data corruption or
productivity loss. Configuration Manager 2007 R3 tools allow organizations to monitor current power usage
patterns, develop intelligent power management policies, apply and enforce those policies, and report against
subsequent power savings and carbon footprint reductions. With these tools, organizations are also able to
develop flexible power management strategies that make sense, giving them the ability to create policy
exceptions for critical systems or tools to enforce different power settings for peak and non-peak periods.

Conserving power at the desktop level translates not only into potential cost savings through power
consumption reduction; it also has the side effect of helping to reduce the overall carbon footprint of an
organization. This, in turn, provides for greater movement toward ‗green IT‘ principles and, in the process, can
help to make many organizations eligible for utility company rebates and refunds that may apply. Client power
management with Configuration Manager 2007 R3 can yield immediate and substantial cost savings with
minimal effort and expense.




Effective Energy Management: System Center Configuration Manager 2007 R3                                           iii
Contents
Abstract .............................................................................................................................................................................iii

Contents............................................................................................................................................................................. iv

Why Is Power Management Important? ................................................................................................................. 1
 Energy Cost Savings ................................................................................................................................................... 1
 Carbon Footprint Reduction .................................................................................................................................. 1
 Energy and Utility Rebates ..................................................................................................................................... 1

Traditional Barriers to Power Management......................................................................................................... 2
  Data Corruption Concerns Addressed ................................................................................................................ 2
  Off-hours Maintenance Needs ............................................................................................................................... 2
  Exceptions and Critical Systems ........................................................................................................................... 2
  Providing Power Management in Mixed Client Environments.................................................................. 3

Implementing Power Management with Configuration Manager 2007 R3 ............................................... 3
  Monitor Current Power Usage and Settings ..................................................................................................... 3
  Analyze Power Trends and Define Policies ...................................................................................................... 4
  Apply and Enforce Policies ..................................................................................................................................... 5
  Check Compliance and Report Power and CO 2 Emission Savings............................................................. 5

Conclusion ......................................................................................................................................................................... 7




Effective Energy Management: System Center Configuration Manager 2007 R3                                                                                                              iv
Why Is Power Management Important?

Energy Cost Savings
The most common driving force behind power management in many organizations is simple economics.
Workstations using energy to spin hard drives, light monitors, and burn CPU cycles when not in use drain
unnecessary power, resulting in higher energy bills. For a significant portion of the day, this equipment is
unused and simply draining unnecessary power. Being able to manage the power settings of client systems
centrally, making intelligent decisions about when a system needs to be powered or when power consumption
can be throttled down can have a significant positive impact
on the bottom line of an organization, particularly in a global
                                                                         There were an estimated 900
economy where energy costs are significantly increasing.             million desktops in use worldwide in
                                                                     2006, according to IDC. If all of that
Carbon Footprint Reduction
                                                                        equipment met the 2007 Energy
While often not the primary driver, a welcome benefit to              Star 4.0 specification, it would cut
overall energy reductions is a subsequent reduction in the             power consumption by 27% over
carbon footprint that an organization places on the                  2006 Energy Star levels. That would
environment. The majority of power generated requires the              save 115 billion kWh—enough to
release of carbon dioxide (CO2) in varying amounts, depending         power all of Switzerland for nearly
on the process used to generate the electricity. Wasted power        two years—and cut greenhouse gas
subsequently means that more CO2 was released into the                emissions by about 178 billion lbs.
atmosphere than may have been required. Power                         - Marla Sanchez, principal research
management can subsequently allow an organization to                  associate at the Lawrence Berkeley
demonstrate that it is making strides toward reducing its                    National Laboratory
carbon footprint and implementing greener IT practices.

Energy and Utility Rebates
For many organizations, local power utilities have programs in place that offer electricity power reductions
when specific energy reduction thresholds have been met or when implementing power-saving mechanisms
such as client power management. For many of these utilities, there is a reporting aspect to the rebates which
must be satisfied, and some require up to three years of reports to comply with the rebate requirements.
Implementing power management techniques that allow for long-term reporting is required for the realization
of these benefits.




System Center Configuration Manager R3 Power Management                                                          1
Traditional Barriers to Power Management

Data Corruption Concerns Addressed
Several factors have traditionally sabotaged efforts to implement client power management in the past. One of
the most common factors has been a fear that power management could cause data corruption of open files or
processes on client PCs. Some of these fears were developed from real scenarios of aggressive tools which
forced specific applications or services to shut down to conserve power.

Power management with System Center Configuration Manager 2007 R3 takes a conservative approach to
enabling power savings. Power policies can be created that do not completely shut systems off, but instead,
lower power consumption on components during idle periods and put systems into sleep mode instead of
turning them completely off. Sleep mode saves as much power as shutting systems fully down, but does not
carry the same risk of data corruption that can be associated with forced shutdowns. Configuration Manager
2007 R3 provides the necessary engine to set and configure Windows power policies centrally on clients rather
than taking draconian measures to enforce power policies. If employees use a device during off-hours, they are
still able to work without worrying about their systems shutting down unexpectedly.

Off-hours Maintenance Needs
Another common barrier to the enactment of power consumption policies is the need to perform system
maintenance, patch software, or run nightly scheduled routines on systems during idle periods. These needs
have previously led to policies that kept systems on 24 hours a day, to ensure that enough time is available for
necessary maintenance windows.

                                              Configuration Manager 2007 R3 does not turn systems off—it puts
  In a recent Forrester Research Inc.
                                              them to sleep, allowing them to be patched and maintained on
   report of PC power management
                                              demand. Through the use of wake timers, a native function of
   practices at companies, only 13%
                                              Windows, the machines can be set to wake themselves up at various
   of 99 IT professionals polled said
                                              points in the evening and check for updates or software. When the
   that they had implemented wide-
                                              ‗wake up‘ is complete, the machine will go back to sleep. This
       scale power management
                                              eliminates the need for leaving a machine fully powered during idle
  programs, while another 16% said
                                              periods.
   they had implemented programs
       but needed to scale them.
                                              Exceptions and Critical Systems
    Source: The State Of PC Power
                                              Most organizations have at least some systems which fall into the
    Management: 2009, Forrester
                                              exception category. In certain cases, there are systems that are
     Research, Inc., July 28, 2009
                                              required to be turned on and fully available at all hours. Other
                                              systems may not have necessary compliant hardware for power
management. Adoption of comprehensive power management policies in the past has not always taken into
account these types of exceptions, which has slowed adoption of the concept.

Creating exception power policies with Configuration Manager 2007 R3 is inherent in the product, and
relatively straightforward to implement. Systems can be ‗opted-out‘ of power management as necessary, and

System Center Configuration Manager R3 Power Management                                                             2
various departments or business units can have different policies depending on their needs. In addition, out-of–
the-box System Center allows for two sets of power management policies for all clients: one for peak periods
and one for non-peak periods. This allows for more aggressive power management policies to be enacted at
night during non-peak periods, with more lax settings to be in place during the day.

Providing Power Management in Mixed Client Environments
Configuration Manager 2007 R3 is specifically designed to work with the power management capabilities built
into the Windows 7 operating system. Windows 7 provides the best platform for power management, with
considerable emphasis placed on optimization of power settings and providing granular control over individual
power-consuming devices on the system. While Configuration Manager 2007 R3 provides the most
comprehensive control over Windows 7 clients, it is also designed to work well in mixed environments with
                                                                 ®
older versions of Windows such as Windows XP or Windows Vista , taking full advantage of the power
management capabilities in each version and allowing for the creation of power policies that can be applied
across multiple versions.


Implementing Power Management with Configuration Manager 2007 R3

Monitor Current Power Usage and Settings
Successful implementation of a client power management plan with Configuration Manager 2007 R3 ideally
requires multiple phases. During the first phase, existing power usage, system power settings, and CO2
emissions are measured to create a baseline. This information is obtained from deployed Configuration
Manager agents on the clients that gather the information and store it within the central Configuration
Manager database and reporting warehouse. For example, activity levels across machines are measured
throughout peak and non-peak periods, and can be graphed with out-of-the-box charts such as the one in
Figure 1.




System Center Configuration Manager R3 Power Management                                                       3
                           Figure 1: Reporting on Power Usage During Peak and Non-Peak Times

Creating a baseline analysis of current power management settings can also help to determine if there will be
any negative impact from implementing power management settings. For example, some organizations, intent
on initiating a policy to shut down monitors after 15 minutes of non-use, may find that the majority of their
user population has their systems set to shut down after five minutes. In this example, implementation of the
new policy would result in an increase in power consumption. Gaining the knowledge of current settings and
configuration is subsequently critical for understanding the impact of changes.

The baseline generated can be used to make intelligent decisions about when to implement policies, what
periods of time are considered peak and non-peak, and what hardware is not compliant with specific power
policies. The initial baseline power and CO2 emissions reports can also be used to demonstrate the eventual
power and carbon footprint reductions achieved by the power management initiative. This creates hard data
that illustrates the total cost savings achieved and generates evidence that can be used to illustrate the direct
cost savings aspects of power management.

Analyze Power Trends and Define Policies
After the initial phase of analyzing current settings and power usage, the information gathered can be used to
make decisions on what policies will be enacted. During this phase, key decisions as to the number of policies,
exceptions, hours of enforcement, and individual power settings for each policy can be made. Configuration


System Center Configuration Manager R3 Power Management                                                             4
Manager 2007 R3 can help to model power savings that can                   A typical managed operating
potentially be achieved by specific policies, allowing for a              system has up to 30 individual
dynamic understanding of the power savings in each option.              power settings, only about eight of
                                                                         which are touched by individual
Configuration Manager 2007 R3 ships with sets of averages for
                                                                                users. System Center
various hardware types and software versions, and common
                                                                         Configuration Manager 2007 R3
power configurations so organizations can compare existing
                                                                          allows for configuration of the
power consumption against expected policy and eventual power             vast majority of these settings as
savings. This information can be used to create a much more             part of policies, allowing for more
tailored power management policy than could be made if                    granular settings and a better
settings were enacted without this knowledge.                                  customized approach.

Apply and Enforce Policies
The implementation phase of a Configuration Manager 2007 R3 power management policy process involves
putting the newly created power policies in place. Policies can be tested as part of an initial pilot and deployed
at a speed comfortable to the organization. Once a successful pilot has been implemented, the policies can be
deployed to the remaining workstations.

Policies can be enforced so that no changes can be made, or they can be set to allow for individual overrides.
This can all be done on a per-policy basis, so full flexibility, opt-out capability, and risk mitigation can be
achieved.

Check Compliance and Report Power and CO 2 Emission Savings
Once policies are in place, Configuration Manager 2007 R3 will continue to track power consumption and
settings on all managed clients. This information can be stored for years in the data warehouse, giving a long-
term look at power reductions and CO2 emission savings, such as those illustrated in the chart in Figure 2. The
environmental impact reports can be easily customized to reflect the specific CO 2 rating that is applied to a
particular geographical area.




System Center Configuration Manager R3 Power Management                                                           5
                        Figure 2: CO2 Emission Savings Report from Configuration Manager 2007 R3

Post implementation reports can subsequently be used as direct evidence of cost savings, as the power figures
can be turned into dollar amounts based on the local prices of electricity. CO 2 emissions savings can be used to
calculate how much less CO2 was released by implementing the policies within the organization. In addition,
the effects of any modifications or fine-tuning of policies can be identified with the historical graphs.




System Center Configuration Manager R3 Power Management                                                         6
Conclusion
Implementing a client power management strategy can be an easy win for an organization, as immediate and
direct cost savings and environmental benefits can be realized and documented. The tools in Configuration
Manager 2007 R3 allow for comprehensive power management without introducing unnecessary risks or
complicating the process.

Proper implementation of a phased deployment of power management with Configuration Manager 2007 R3
can help an organization to make the right choices when it comes to power management settings by giving
implementers knowledge of existing trends and settings, and providing the tools necessary to make educated
decisions about power settings. In addition, Configuration Manager 2007 R3 can also help justify the project by
generating reports that illustrate the power, money, and CO 2 savings realized through adoption of power
management. All in all, the power management capabilities of Configuration Manager 2007 R3 make it a
comprehensive tool to assist organizations in lowering their power costs and improving their environmental
standings.




System Center Configuration Manager R3 Power Management                                                       7