Technical Whitepaper Static Power and Temperature-Triggered Policies with OpenManage Enterprise Power Manager Abstract This technical white paper provides an overview about effective utilization of Power and Temperature-Triggered Policies in a datacenter environment with Dell EMC OpenManage Enterprise Power Manager.
Revisions Revisions Date Description August 2020 Initial release with OpenManage Enterprise 3.4.1 and Power Manager 1.2 versions. Acknowledgements This paper was produced by following members of the Enterprise System Software development team. Author: Jimmy Muraleedharan, Test Senior Engineer Support: Shruthi Ravoor, Technical Content Developer 2 Infographics: Moncy Lavy, Advisor, Engineering Graphic Design The information in this publication is provided “as is.” Dell Inc.
Table of contents Table of contents Revisions............................................................................................................................................................................. 2 Acknowledgements ............................................................................................................................................................. 2 Table of contents ...............................................................................................
Acronyms Acronyms 4 Acronym Expansion OME OpenManage Enterprise iDRAC Integrated Dell Remote Access Controller CMC Chassis Management Controller MSM Modular System Management MCM Multi Chassis Management MM Management Module REST REpresentational State Transfer GUI Graphical User Interface EPR Emergency Power Reduction ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers API Application Programming Interface PDU Power Distribution Unit Static Power an
Executive Summary Executive Summary This technical whitepaper describes the significance of static power and Temperature-Triggered policies in modern datacenters and the application of same with Dell EMC OpenManage Enterprise Power Manager.
Introduction 1 Introduction Dell EMC OpenManage Enterprise Power Manager is an extension to Dell EMC OpenManage Enterprise console and uses fine-grained instrumentation to provide increased visibility over power consumption, anomalies, and utilization. Deployment of power policy helps to manage the power cap for a device, or a group of devices monitored in Power Manager. When a power policy is enabled, it enforces user-defined power limits on the system.
Prerequisites for Power Policy Deployment 2 Prerequisites for Power Policy Deployment This section provides an overview about the list of prerequisites required for performing static power and Temperature-Triggered policy actions on Power Manager monitored devices and groups. 2.
Prerequisites for Power Policy Deployment 2.2 User Privileges and Accessibility • OpenManage Enterprise user privileges - • Managed Device Access—when you are discovering devices in OpenManage Enterprise, ensure that: - 8 The OpenManage Enterprise users can trigger policy actions on Individual Devices with Administrator or Device Manager privileges. Only the Administrators can perform the group level policy actions. The management console (iDRAC or CMC or MM) is reachable.
Create Static Power Policy 3 Create Static Power Policy Create and apply static power policy either on Individual devices or groups (Static and Physical Groups) by performing the following steps: Prerequisite: To create a policy for static or physical groups, ensure that there is minimum of one device monitored in the group. 1. Add Individual devices or groups in Power Manager. 2. To create a Static Power Policy, login to Dell EMC OpenManage Enterprise and navigate to Power Management > Policies tab. 3.
Create Static Power Policy Section to select device for applying static power policy • To Add Group a. Select the Group option and click Select Group. The Select Group page is displayed that lists all the static and physical groups monitored in Power Manager. b. Select the group and click Add Selected. Section to select group for applying static power policy Note: Static and physical groups monitored in Power Manager are available for selection of creation of policy, by default.
Create Static Power Policy c. The list of all monitored groups in Power Manager can be filtered either by Group Name or Group Type. Available options for Group Type filter include All, Static and Physical. Select Group section when the Group Type is selected as Physical Select Group section when the Group Type is selected as Static 6. Select a group and click Next to navigate to Policy Settings section. 7. In Policy Settings section, provide the Power Cap value for the selected device or group. 8.
Create Static Power Policy - - Minimum, maximum and average power metrics are displayed for the selected device or group based on the Monitoring Time Period selected. You can refer these power metrics for 1 Day, 7 Days, 1 Month or 3 Months from the drop-down menu. Identify the valid range for Power Cap value from the Lower Bound and Upper Bound values. In case of groups, the overall Power Cap value is the aggregate of Power Cap values of individual devices which are monitored as part of the group.
Create Static Power Policy Power Settings section when a device is selected Due to few device limitations, Power Manager maintains static Upper bound and Lower bound values.
Create Static Power Policy Schedule options (Time Span, Day(s), Active Date) for static power policy 10. In Summary section, view the details that are provided and click Finish. The policy is created successfully. Review policy inputs on Summary section All static power policies created in Power Manager on devices or groups are listed in Power Management > Policies tab. For groups, the policy details are available in Group Details > Policies and EPR tab.
Temperature-Triggered Policy 4 Temperature-Triggered Policy Use Temperature-Triggered policy to prevent damage to devices due to overheating in the event of cooling infrastructure failure. The policy restricts the processing capability of the devices in the group, hence reducing the possibility of any damage to the device due to overheating.
Temperature-Triggered Policy Overheating due to the failure of cooling infrastructure. Temperature-Triggered EPR (Throttle) applied by Power Manager.
Temperature-Triggered Policy 4.1 Create Temperature-Triggered Policy To create a Temperature-Triggered policy, perform the following steps. 1. Login to OpenManage Enterprise and navigate to Power Management > Policies. 2. Click Create to launch the policy creation wizard. 3. Select the policy Type as Temperature-Triggered. Note: Modifying the type of policy after creation is not supported. Create Temperature-Triggered policy 4. Enter the policy name and description (optional).
Temperature-Triggered Policy Note: Both static and physical groups monitored in Power Manager are available for selection by default. Location details are displayed only for physical groups with group tag as Room, Aisle or Rack. Select Static or Physical Group to create Temperature-Triggered policy Note: Temperature-Triggered policy is supported only for groups monitored by Power Manager and if there is a minimum of one device added in the group.
Temperature-Triggered Policy Temperature-Threshold configuration in Policy Settings section ASHRAE Classes available for selection of Temperature-Threshold Note: Scheduling a Temperature-Triggered policy is not supported, and the policy is always active after creation. 8. Review the Summary section after providing the inputs for configuring Temperature-Triggered policy.
Temperature-Triggered Policy Review policy inputs from Summary section 9. After clicking Finish, a Temperature-Triggered policy is created and listed in Power Management > Policies page. Temperature-Triggered policy listed in policies page 10. When the inlet temperature exceeds the configured temperature threshold value, the TemperatureTriggered policy with EPR Throttle option is applied on the group. And, the source of EPR is displayed as Temperature-Triggered.
Temperature-Triggered Policy Temperature-Triggered EPR Throttle listed in Emergency Power Reduction tab Note: You cannot manually disable the EPR Throttle applied by virtue of a Temperature-Triggered policy. However, after the inlet temperature reduces Power Manager automatically removes the EPR.
Temperature-Triggered Policy Message ID—CPWR0050, Severity—Info, Category—Audit Message—The Emergency Power Reduction feature is successfully enabled on the group by using the temperature triggered policy . Note: Power Manager cannot apply Temperature-Triggered EPR (Throttle) when the group already has EPR (Throttle or Shutdown) applied manually or when all the devices monitored as part of the group has EPR (Throttle or Shutdown) applied individually.
Other Policy Actions 5 Other Policy Actions This section provides an overview about various policy actions supported on Power Manager monitored devices and groups. 5.1 View Policy There are two methods to view a policy in Power Manager. To view a policy from the Policies tab, perform the following steps: 1. To view all policies created for devices or groups in Power Manager, navigate to Power Management > Policies tab in OpenManage Enterprise. 2.
Other Policy Actions 3. In OpenManage Enterprise, click Devices > Device Name > Power Management and Monitoring > Policies and EPR. All the policies applied to the device are displayed with the corresponding details. To view all the policies created for a group, click Devices > Group Name > Group Details > Policies and EPR. The policies applied to the group are displayed with the corresponding details. 5.
Other Policy Actions Multiple options available on Policies tab 5.4 Enable Policy Activate policies created for devices and groups by enabling them. To enable a policy, perform the following steps: 1. From OpenManage Enterprise, navigate to Power Management > Policies and enable a policy by using any one of the following methods: At the time of creation or while editing the policy, select the Enable option from Create Power Policy wizard.
Comparative study of Resource Utilization with Static Power Policy configured from Power Manager 6 Comparative study of Resource Utilization with Static Power Policy configured from Power Manager There was a comparative study done to identify the overall power utilization for devices and groups when a static power policy is applied from Power Manager.
Comparative study of Resource Utilization with Static Power Policy configured from Power Manager Power history details of a monitored group with power capping 27 Static Power and Temperature-Triggered Policies with OpenManage Enterprise Power Manager
Frequently Asked Questions 7 Frequently Asked Questions Can I remove Individual Devices or Static Groups from Power Manager after applying an active static power policy? Description: Removal of static groups and Individual Devices with active power policy (Static) is allowed from Power Manager (Power Management > Monitored Devices and Groups). The applied power cap values are automatically removed from the monitored devices and the power policy is automatically deleted in Power Manager.
Frequently Asked Questions Unable to remove the selected group(s) from Power Manager. CPWR0029—Unable to remove disassociate devices or groups from the Power Manager because the Emergency Power Reduction feature is active on . - The behavior remains the same with individual devices when Temperature-Triggered EPR is applied on a device by virtue of a Temperature-Triggered policy.
Frequently Asked Questions Description: Following is a detailed scenario: 1. Discover and add some devices (Device1, Device2) in Power Manager. 2. Create a group (static or physical) in OpenManage Enterprise and add the group in Power Manager (Power Management > Monitored Devices and Groups > Static Groups or Physical Groups). 3. Add Device1 in the monitored group and apply a static power policy on group level (From Power Management > Policies tab). 4.
Frequently Asked Questions Will the power cap applied by virtue of a physical group be removed from the member device, when the device is removed from a physical group monitored in Power Manager? Description: Power Cap applied by virtue of a physical group is removed automatically by Power Manager when the device is removed from a physical group with active static power policy.
Frequently Asked Questions What happens to the policy applied on a physical group, when the physical group is deleted from OpenManage Enterprise? Description: The configured power cap values are removed from the device, when a Power Manager monitored physical group is deleted from OpenManage Enterprise.
Frequently Asked Questions Why are few devices and groups (static or physical) are not selectable in Create Policy wizard? Description: If the devices or groups are not compatible with Power Manager, then you cannot select them in the Create Policy wizard.
Frequently Asked Questions Power Configuration related alerts on group membership changes and policy violation cases Can I apply static or Temperature-Triggered policy on an MX7000 chassis which is configured as a member in MCM mode? Description: You cannot configure power cap values directly on an MX7000 chassis which is added as a member in MCM group.
Frequently Asked Questions Select configurations in MSM to deploy on all group members Audit log entries are available in OpenManage only for the power cap value enabled on Lead MX7000 chassis since the propagation of power configuration is managed by MSM.
Frequently Asked Questions Message on disabling Power Manager with active policies Resolution: Disable the policy and then try to uninstall or disable Power Manager. Note: With active policies are configured from Power Manager, OpenManage upgrade is successful and the policies are maintained in the same state post update.
Technical Support and Resources 8 Technical Support and Resources • • • 8.1 Related Resources • • • • • 37 Dell.com/support is focused on meeting customer needs with proven services and support. To watch quick and short videos about handling the PowerEdge server components, visit the QRL video website. Storage technical documents and videos provide expertise that helps to ensure customer success on Dell EMC storage platforms.
