Scalability and performance of Dell EMC OpenManage Essentials version 2.5 This Dell EMC technical white paper provides an overview of scalability and performance testing of OpenManage Essentials 2.5, and contains reports of test results used to assess the product quality and stability of various product features. This technical white paper also offers recommendations to achieve maximum performance by using OpenManage Essentials (OME).
Revisions Date Description January 2013 Initial release August 2017 Updated with OME 2.3 release data February 2018 Updated with OME 2.4 release data November 2018 Updated with OME 2.5 release data Acknowledgements This paper was produced by the following members of the Dell EMC storage engineering team: Author: Mahendran P Support: Geetanjali Srivastava (InfoDev) Other: NA The information in this publication is provided “as is.” Dell Inc.
Table of contents Revisions.............................................................................................................................................................................2 Acknowledgements .............................................................................................................................................................2 1 Executive summary .................................................................................................................
1 Executive summary This technical white paper provides an overview of scalability and performance testing of OME 2.5, and contains reports of test results used to assess the product quality and stability of various product features. This technical white paper also offers recommendations to achieve maximum performance by using OME. 4 Scalability and performance of Dell EMC OpenManage Essentials version 2.
2 Introduction OME is a web-based hardware management application that provides a comprehensive view of Dell EMC systems, supported devices, and components in the enterprise network environment. This technical white paper summarizes the OME 2.5 system testing environment, methodology, resultant data, and recommendations to achieve performance similar to that demonstrated by the test results. 5 Scalability and performance of Dell EMC OpenManage Essentials version 2.
3 Test environment and methodology The scalability and performance tests for OME were performed on the following environments: • Small business environment: Consisted of 100 managed systems • Medium business environment: Consisted of 500 managed systems • Enterprise business environment: Consisted of 2000, 5500, and 8000 managed systems The hardware and software configuration of OME was different for these environments. For more information, see Table 1. Table 1: Test environments for OME v2.
4 Generic recommendations Based on the analysis of the performance data collected for the various features tested, Dell EMC recommends the following for optimal OME performance: • • • • 7 The minimum hardware and software mentioned in Table 1 must be used to ensure best performance of OME. Higher hardware specifications such as increase in processor cores or RAM, will yield better performance than that described in this technical white paper.
5 Discovery and inventory The test results for discovery and inventory features are listed in Table 2 and Table 3. Table 2: Discovery and inventory data in OME 2.
Recommendations for using discovery and inventory features of OME • • • • Usage of recommended hardware and software components according to the number of devices managed. The ICMP and SNMP retry and timeout values must be increased if the network usage is high. Select only the protocols necessary for a particular discovery and inventory task because selecting all the protocols causes the discovery and inventory task to run slower. For ICMP related settings in OME, see the OpenManage Essentials 2.
6 Network bandwidth utilization Discovery and inventory bandwidth utilization by using the Guided Discovery wizard The test results of network bandwidth utilized by different protocols for discovery or inventory, and health status poll by using the Guided Discovery wizard in OME is listed in Table 4.
Discovery and inventory bandwidth utilization by using the Standard Discovery wizard The test results of network bandwidth utilized by different protocols for discovery or inventory, and health status poll by using the Standard Discovery wizard in OME is listed in Table 5.
Storage/EMC NAS SNMP Storage/PowerVa ult MD SNMP Storage/Tape Symbol IOA SNMP Client WMI Client SNMP UPS SNMP PDU SNMP Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll Discovery/Inventory Status Poll KVM 12 SNMP Discovery/Inventory Status Poll Scalability and performance of Dell EMC OpenManage Essentials version 2.
Network bandwidth utilization in OME configuration tasks The test results of network bandwidth utilization by OME during the different configuration tasks are listed in Table 6.
7 System update and server configuration management Recommendations for using the System Update & Server Configuration feature based on the analysis of the test results: • For System Update or Server configuration deployment tasks, recommendation is to use 100 managed systems at any given time.
8 Alerts and task management Recommendations for using the system update feature based on the analysis of the test results: • • • • Domain Name System (DNS) must be configured such that OME is able to resolve the hostname and all the received alerts. If the name resolution in OME is not successful, the alerts or events are received and processed at a slower rate. From the test data collected, OME can process alerts at the rate of 1/second.
9 Known limitations • • 16 Discovery and Inventory: Memory used by OME for subsequent scheduled discovery and inventory gradually increases. We have observed an increase in memory usage reaching 1 GB by OME for discovery and inventory with the default schedule cycle (24 hours) over a period of 5 months (with 8000 managed devices). However, the memory will be released after restarting the OME service, or the OS on which the OME is installed.
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