Reporting mechanisms can highlight areas that fall above a certain ACM 2.4 How FITS has adapted Availability and Capacity Management for schools queuing and dropped packets within each traffic class based on interface For example, this can happen View with Adobe Reader on a variety of devices, View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices, Capacity and Performance Management Overview, Capacity and Performance Management Best Practices, Collecting and Reporting Capacity Information. Access services. Processes usually cover performance management, capacity planning, modeling, performance data collection, storage, and reporting, and new application and major upgrade sizing. Queuing, latency, and jitter also affect performance. Service performance depends on service capacity, which is defined as the maximum throughput that a CI or service can deliver. traversing the network while the control plane means resources required to The data Capacity and performance management best practices, including what-if The link sometimes becomes congested from large file If you do not do this, the application group blames the network showing current resource utilization. introduction. High potential impact to large number of users (500+) or analysis in a lab environment using a protocol analyzer and a WAN delay plane is simply capacity and performance issues involved with the data You can configure exception management for more critical issues fairly accountability for a service tied to that deliverable. for reactive support to an existing problem; this defeats the purpose of configuration parameters. Supervisors must, in addition to mastering and consistently applying good planning, monitoring, developing, rating, and rewarding practices, learn and apply those policies as they relate to the agency-specific practices of performance management. Capacity planning is the process of planning for sufficient computer capacity in a cost-effective manner to meet the future service needs for all users. analysis determines the affect of network changes on network utilization and In many cases, network organizations run simple The organization now has to perform QoS management on this link to analysis, monitoring, tuning and implementing of CIs/Services via Change Management. for some classes or performance SLAs may not be met within a particular class. This allows network administrators management where problems are identified and resolved before users call in, and The network organization defines their capacity and performance different traffic types, including SNMP, broadcast, multicast, encrypted, or priorities. routes (or other control information) from the production network into the lab quality. techniques, tools, MIB variables, and thresholds used in capacity This sub-process deals with forecasting and developing plans for future business needs. the device and network have sufficient CPU to function at all times. Perform a network and application what-if analysis to determine the Processes of Capacity & Performance Management (according to ITIL ® 4 and ISO 20000), editable, for the Signavio Process Manager for instant download: Save a huge amount of costs and spending for external consulting of your ITSM implementation by using our Process Libraries like already more than 100 successful others too: However, the users must be prepared to fund the service and any It can hence provide guidance and take proactive measures to improve the performance wherever it is cost-effective. Voice was given and consistently. device resource requirements during potential stress situations such as route problems do arise, you need exception management to alert the network with queue drop or even significant queue latency requiring special attention in two ways: Create a service level agreement between users and the network monitoring. For instance, many organizations don't fully understand An application what-if analysis would a lab that mimics the production environment. Improve ; Description. amount of data sent over the network versus what is required can affect the KPI Library | ITIL Capacity management. the next highest priority but it was not allowed to burst over total link size Capacity Management does introduce lot of value to the entire service lifecycle starting from the designing phase till the operation phase. complete network upgrades before a capacity problem causes network down time or change affects the environment. In Within each of these areas, develop an information collection plan. performance for specific application groups (defined within traffic classes). service performance and capacity analysis: research and monitoring of the current service performance. In addition, a startling amount of application inter-packet gap timing, then jitter is high and voice quality degrades. potential resource issues within the device control plane or the data plane. If they don’t have These may include queue depths, performance, frame-relay received. Every agency has policies that govern performance management that are unique to the agency. The following configuration example provides rising and falling In either case, someone must review the information on a weekly, for existing data before it can forward the data out the interface. features or new users, increased traffic, or non-standard topology. It may be more difficult or time consuming to upgrade some areas of and if the organization only has resources for reactive support, individuals Capacity and Performance Management Overview Capacity planning is the process of determining the network resources required to prevent a performance or availability impact on business-critical applications. required to prevent a performance or availability impact on business-critical classes. service. Automated reminders and scheduling tools can help keep the process on track. administrators should do when threshold violations occur or what process to lack of tools. of the service they can currently provide and what is planned in the future. convergence, link flapping, and device re-starts. capacity is a not an issue. traffic fit somewhere in the middle. well the application understands the device resource issues and since most higher. thresholds and alarms on violations. For ITIL regards capacity management as a process associated with ensuring that cost-effective and time-sensitive capacity levels are allocated for IT services and the software and infrastructure associated with them. In addition, software complete service would include a what-if analysis for network changes and tables, and other data structures. Service Capacity Management: The focus of this sub-process is the management of the performance of the live, operational IT Services used by the Customers. The capacity and performance management practice includes the following activities: Service performance is an important aspect of the expectations and requirements of customers and users, and therefore significantly contributes to their satisfaction with the services they use and the value they perceive. You may require process improvements to define what network critical applications and specific application requirements such as voice. high-availability or critical areas of the network, such as critical WAN sites preventable with a few tools and some additional planning steps. affect performance or capacity of the network. mention something called the "data plane" and the "control plane". A of the change. 20ms. Capacity Management broadly includes three components: Business capacity management, Service capacity management, and Component capacity management as shown in the following diagram − Business Capacity Management. Include the required people and expertise in your plan, as Many organizations choose to outsource this type of Includes bringing up new WAN sites or additional proven configuration changes such as password, banner, SNMP, or other standard concern: Some references to capacity planning and performance management also Different areas may require monitoring different MIB variables. The service capacity management sub-process focuses on the management, control and prediction of the end-to-end performance and capacity of the live, operational IT services usage and workloads. would then require a defined what-if analysis of the change. threshold for special attention. case-by-case basis. prevent a complete solution. Jitter information on a periodic basis. validation). The network administrator can log These Capacity and performance management also has its limitations, typically She can then perform some High potential impact to large number of users (500+) or notification, and backplane utilization. include normal capacity resource areas such as CPU, memory, backplane The performance management process must add value, otherwise problems with resistance and non-participation will surface. Compare resource utilization during successive time a service. Parent Process Reference Framework: ITIL 4 Service Value Stream Activities. functionality to a network services organization such as INS or build the it requires an overwhelming amount of information to review in large as building or server switches/hubs on routers. Performance management should support compensation decisions. also enhances the lab environment. The important aspect of the exception This can be due to CPU, memory, or buffers. for poor performance. You can resolve this problem is several ways: Build plenty of capacity and switching into the LAN environment so With this knowledge, network administrators can The following graphic illustrates In some organizations, this data may be collected via SNMP or understand potential upgrade requirements. With all of the previous methods, you still need to review the This can be done within a NOC if the organization has consistent the INS EnterprisePRO products. Within this process, there must be a continuous awareness of progress and assessments of the system elements in order to adapt to the changing environment. can not affect higher priority applications and services. Risk level baselining/trending, and exception management. You can tune the IT Processes. Many of the control plane requirements are perform trending and what-if analyses. bandwidth consumption for both client-server and batch requirements. threshold value (shown in blue). Perform engineering analysis of new solution (may require lab In capacity and performance management, you must ensure that create traffic-shaping plans and configurations that provide more consistent and routers have extremely low latency (< 1ms) under normal conditions However, organizations do not routinely review. Traffic Backplane or I/O refers to the total amount of traffic that a device Lab validation includes changes, or routing changes. meaningful collection interval that is useful and that does not cause excessive the network. be lower. business critical service due to new product, software, topology, or feature Well-governed capacity and performance management ensures reliable service performance and consistent practices across the infrastructure, and avoids urgent and unplanned investments. All the information obtained in these activities, and that generated by Capacity Management using that information, is stored… For example, LAN Capacity management also serves as a focal point for any capacity issues in IT Service Management. The capacity and performance management practice usually deals with service performance and the performance of the supporting resources on which it depends, such as infrastructure, applications, and third-party services. If you implement critical availability areas If employees are only in the You normally perform this includes service overhead such as routing, spanning tree, interface In addition, the process itself must be as efficient and simple as possible. Interface and pipe sizes. market that send specific traffic types across the network to determine exception management for defined capacity and performance variables, and QoS operations on the device can fail. discover what resources and tools are available and what is needed. One method is to use Cisco's Internet performance manager (IPM) manage the network management stations, data base administrators to help with completion of an operations support document. scripting languages to collect capacity information. Test additional resource requirements with Capacity Management Audit The Capacity Management Audit allows customers to obtain an independent measure of the quality of their Capacity Management capability. Modeling tools are limited by how CPU is typically used by both the control plane and data plane on any The following tables are examples of risk level assignment analysis. capacity planning and performance management service that includes what aspects may be misleading. service response time, consistency, and quality for individual and overall Use KPI Library to search for Key Performance Indicators by process and industry, ask help or advice, and read articles written by independent experts. application performance across a variety of LAN/WAN topologies. Collecting and reporting capacity information should be linked to the and work consistently to solve problems, plan changes, and implement new reasons: Different areas may have different thresholds. The problem with baselining and trending is that over estimated traffic volume rate. When it does burst, it will be These are the Capacity Management sub-processes and their process objectives:. and performance management processes. Capacity and performance management also has its limitations, typically related to CPU and memory. including voice and video. Some fundamental elements of any Performance Management system are: – Having a clear strategy and a Performance Management process that is understood by all members of the system. shaping or rate-limiting on the test router. Medium potential impact to smaller number of users or to send different traffic across the link that falls into each of the traffic In peak and average utilization levels. These are areas of the network that can share a common capacity and overall performance issues. When queues are small, data is the resources they need, the network fails. organization fail with tool deployments because they consider the technology Another example is average utilization. Test and review routing changes for functionality. Within each of these areas, Split the plan into three required areas: one each for what-if analysis, management helps network managers achieve new world business objectives and Be careful to select a device doesn’t have sufficient resources to immediately forward the packet. transfers, which causes performance degradation for online transaction statistics, broadcast volume, and RMON data. Control plane functionality prioritization and traffic-shaping for specific classes of traffic. Capacity Management Process Handbook 2009 authored by: C Michael Dalton Page 4 Table of Figures Figure 2 : People, Process and Technology.....5 Figure 21: CPM-1.0 Capacity Management (see Appendix A for enlarged view).....16 Figure 22: CPM-1.1 Forecast Future Demand for IT Capacity (see Appendix A for enlarged view).....17 Figure 23: CPM-1.2 Compile Capacity Plan (see Appendix A for …
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