Processes that lead to requests for modification of a software product after delivery to correct faults, to improve performance or other attributes. Functionality, usability, reliability, performance and supportability are together referred to as furps in relation to software requirements. Jul 19, 2017 maintainability is the ease with which a product can be maintained in order to isolate defects or their cause, correct defects or their cause, meet new requirements, make future maintenance easier, or cope with a changed environment. Furps functionality, usability, reliability, performance. Develop, maintain, use and report data lsa reports detail ips element resources 2018 psm workshop march 20, 2018 14. The second edition of the bestselling product reliability, maintainability, and supportability handbook helps professionals identify the shortcomings in the r. For this reason, many applications are replaced simply because the overhead to modify them becomes prohibitive. Product reliability, maintainability, and biggerbooks. With this handson tool, designers can use the markov modeling technique to analyze safety, reliability. Prioritizing them is necessary because the client will optimistically ask that you do all of them.
Collectively, they affect economic lifecycle costs of a system and its utility. In software engineering and hardware engineering, serviceability also known as supportability is one of the ilities or aspects from ibms rasu reliability, availability, serviceability, and usability. With strong design for supportability practices, an organization delivers products to its customers with a lower total cost of ownership tco and higher total value of ownership. During the engineering and manufacturing development phase, supportability analyses tool can be used to. Evaluate alternative system designs and select components for the end item hardwaresoftware and support infrastructure. Focuses on the core systems engineering tasks of writing, managing, and tracking requirements for reliability, maintainability, and supportability that are most likely to satisfy customers and lead to success for selection from reliability, maintainability, and supportability. Maintainability are the relative costs of fixing, updating, extending, operating and servicing an entity over its lifetime. The installation, configuration, upgrade, administration, monitoring and maintenance of database engines. In other words, the software encounters an anomaly or a defect something customers encounter everyday. Supportability analysis in the government and defense sectors is defined in several prescriptive standards such as the society of automotive engineers sae saegeiastd0007 logistics product data.
Effective supportability begins with the development of sustainment requirements to drive the design and development of reliable, maintainable and affordable systems through the systems engineering and acquisition process. Reliability, availability, and maintainability ram are three system attributes that are of tremendous interest to systems engineers, logisticians, and users. Tutorial software supportability methods and techniques to improve life cycle costs by dr. Whether it is for the manufacturing of goods or selling materials and other things, supportability can be achieved by activities like repair and maintenance. Reliability availability, predictability, accuracy. Watch now this publication, reflecting the specific mission of the reliability information analysis center riac, discusses how the effective application of reliability, maintainability, quality, supportability and interoperability rmqsi tools and processes will ensure that essential warfighting capabilities are delivered that meet system suitability requirements. Reliability, maintainability, and availability ram are three system attributes that are of. It requires a combination of efforts throughout a products lifecycle to ensure that the reliability that is designed and manufactured into the system is realized over the products life in the field. This estimate is based upon 7 microsoft supportability program manager salary reports provided by employees or estimated based upon statistical methods. Cognitive dimensions of notations software quality. To help you out, here is a quick list outlining my top 7 default ilities in the order that i prioritize them. Reliability, availability, and maintainability the mitre. While it is appropriate to apply soft techniques in the problem space to help sort through issues and assess information, it is not appropriate to characterize the results as performance measures. Capability development document cdd life cycle sustainment plan lcsp supportability objectives materiel solutions analysis phase maintenance concept product support strategy kpp ksa supportability metrics design criteria logistics product data geia standard 0007 reliability maintainability availability ram ramc affordability tradeoff failure.
It refers to the ability of technical support personnel to install, configure, and monitor computer products, identify exceptions or faults, debug or isolate faults to root cause. Serviceability engineering may also incorporate some routine system maintenance related features see. However, the elaborate computations required have often made markov modeling too timeconsuming to be of practical use on these complex systems. In computerized systems, a software defect or fault can be the cause of a failure. Jul 19, 2017 a key product of supportability is the maintenance plan which evolves and drives all sustainment resource requirements throughout the life cycle. Supportability refers to the degree by which the characteristics, design and functions of products or services meet the standards of a particular system or organization. Developing maintainable software software sustainability. Design for reliability, maintainability and supportability. The basis for this effort is the work carried out by the sae g11 rmsl software committee, of which most members of this group are or have been distinguished members. Product reliability, maintainability, and supportability. A measure of the product maintainability parameter, related to availability and readiness,the total corrective maintenance time, associated with downing events, divided by the total number of downing events, during a stated period of time. Pdf product maintainability design method and support tool. Keywords software metrics, halstead measure, maintainability, modifiability, software architecture, software deterioration. A definition of maintainability with a few examples.
Tutorial software supportability methods and techniques to. Maintainability maintenance is the activity of modifying a software product after initial delivery. Peercy sandia national laboratories chair, society of automotive engineers reliability, maintainability, supportability logistics g11sw software committee part of a threeday course on software supportability. Milhdbk502a, product support analysis, and geiastd0007 logistics product data define over 100 logistics product data lpd tables that document information for the 12 integrated product support ips elements. Maintainable software provides the customer with a higher quality product be cause there are fewer problems in the operational system. They generally seek such help at a software vendors product support services. Usability human factors, aesthetics, consistency, documentation, responsiveness. With software getting more and more complex it is getting extremely difficult to support customers in a timely and cost effective manner. The second edition of the bestselling product reliability, maintainability, and supportability handbook helps professionals identify the shortcomings in the reliability practices of their organizations and empowers them to take actions to overcome them.
Product reliability, maintainability, and supportability handbook. In software engineering, these activities are known as software maintenance cf. In todays lingo, it is truly designing the product for optimal customer experience. Supportability, like reliability and maintainability, is both a measure of effectiveness and a related discipline that endeavors to maximize it. Reliability engineering software products reliasoft. Furps furps is an acronym representing a model for classifying software quality attributes. System supportability and life cycle product support. Within systems engineering, quality attributes are realized nonfunctional requirements used to. Developing maintainable software helps reduce technical debt. Use features like bookmarks, note taking and highlighting while reading product reliability.
Reliability, maintainability, and supportability is a reference for systems engineers and graduate students hoping to learn how to effectively determine and develop appropriate requirements so that designers may fulfil the intent of the customer. Performance speed, efficiency, resource consumption, throughput, capacity, scalability. Guidelines for ensuring software supportability in systems. Ram are inherent product or system attributes that should be. With strong design for supportability practices, an organization delivers products to its customers with a lower total cost of ownership tco and higher total value of ownership also known as total net benefit of ownership. In 1994 the sae g11 reliability, maintainability, supportability, and logistics rmsl division chartered a software committee, g11sw, to create several software standards and guidance documents across the rmsl spectrum, including a software supportability program standard.
Download it once and read it on your kindle device, pc, phones or tablets. Maintainability is the ease with which a software product can be modified. An overview on reliability, availability, maintainability. Peercy sandia national laboratories chair, society of automotive engineers reliability, maintainability, supportability logistics g11sw software committee part of.
Supportability measures the degree to which a system can be supported both in terms of its inherent design characteristics of reliability and maintainability and the efficacy of the various elements of product support, to include the spare parts, tools. This may involve maintaining, overhauling and repairing equipment to ensure it is operating at optimum function. In any organization, particularly in an industrial setting, supportability is a vital factor to keep operations running smoothly. Focuses on the core systems engineering tasks of writing, managing, and tracking requirements for reliability, maintainability, and supportability that are most likely to satisfy customers and lead to success for suppliers this book helps systems engineers lead the development of systems and services whose reliability, maintainability, and supportability meet and exceed the expectations of. Manageability, maintainability, supportability, extensibility, and. Despite the identification of a software crisis in the 1960s, large software projects are full of defects even today 19. Software metrics, halstead measure, maintainability, modifiability, software architecture, software deterioration. To ensure product reliability, an organization must follow specific practices during the product development process that impact reliability. The software offers optionally licensed features of accelerated life testing for accelerated test planning and data.
Agility in working software is an aggregation of seven architecturally sensitive attributes. One of the important tasks of the design process is to translate the overall functional requirements for a new system into its physical requirements in relation to performance, power consumption, cost, reliability, maintainability, supportability etc. Organize for project for supportability supportability failures often occur between teams or areas of expertise i. Software govt software practitioners guide to supportability.
Product reliability, maintainability, and supportability handbook kindle edition by pecht, michael. List of system quality attributes maintenance technical supportability disambiguation serviceability disambiguation software sizing. In engineering, maintainability is the ease with which a product can be maintained in order to. In any case, whenever customers encounter problems caused by defects they need help to solve these problems. The influence of reliability, maintainability, quality. The more a software product grows, the more technical debt accumulates until maintenance time can become the dominant portion of an agile teams workload.
Reliability, availability, and maintainability sebok. Design for supportability is the umbrella under which design for usability, design for serviceability, design for maintainability, and design for reliability all fall. Reliability, availability, and maintainability ram or rma are system design attributes that have significant impacts on the sustainment or total life cycle costs lcc of a developed system. T a b l e s d a t a practitioners guide to supportability. An overview on reliability, availability, maintainability and. Product information andromeda systems incorporated. Reliability, maintainability and supportability should be designed into the product. Software that is written without maintainability in mind requires about four times as much effort to maintain than it did to develop. Reliability, maintainability, quality quanterion solutions. Manageability, maintainability, supportability, extensibility, and flexibility. A lack of maintainability will be evident as high product maintenance costs, long outof service times, and possible.
Any comprehensive customer experience management program must have design for supportability as one of its core programs. Reliability, maintainability, quality reliability doesnt happen by chance. Introduction many resources are spent on software maintenance. The probability that a product performs its intended. Thus, producing software that is easy to maintain may potentially save large costs. An entity with relatively low costs in these areas is considered maintainable whereas an entity with high costs may be considered unmaintainable or high maintenance. In the world of software architecture there are many ilities you must take into consideration with every project.
Evaluate systems support alternatives and hemp establish supportability requirements. Mitigation strategy assign someone the specific role of enforcing crossdisciple technical quality architect. Cll 012 supportability analysis milhdbk502a product support analysis. Manageability, maintainability, supportability, extensibility. Software product design design validation and verification prototype 3 development plan integration and test plan. Design for maintainability basic principles maintainability is the degree to which a product allows safe, quick and easy replacement of its component parts. The standard definition of reliability is the probability of zero.
Results in an initial product baseline for the system, hardware, software, maintainability, supportability, and the integrated product support elements, including support equipment. We are the leading reliability solution provider for product test, design, maintenance strategy and optimization. Mar 01, 2012 supportability measures the degree to which a system can be supported both in terms of its inherent design characteristics of reliability and maintainability and the efficacy of the various elements of product support, to include the spare parts, tools, and training required to operate and maintain it. A service tool is defined as a facility or feature, closely tied to a product, that provides capabilities and data so as to service analyze, monitor, debug, repair, etc. Maintainability is a requirement of the cei and swci specifications. Further, supportability is more than serviceability, maintainability, usability. A key product of supportability is the maintenance plan which evolves and drives all sustainment resource requirements throughout the life cycle. Reliability and maintainability definitions rmqsi knowledge. There is a constant struggle to ensure high quality of service qos with low total cost of ownership tco, which in turn. The basis for this effort is the work carried out by the sae g11 rmsl software committee, of which most members of this group are or have been distinguished. In some cases, maintainability involves a system of continuous impr. Product maintainability design method and support tool based on feature model. This eliminates the need to call the printer specialist or. Microsoft supportability program manager salaries glassdoor.
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