Written demand for manual
Invited to build services for ERP systems vendor proposals, you must first according to the needs of the enterprise itself, Written into the requirements specification, so manufacturers interested in participating, there's a letter of direction to follow. Build a set of ERP systems, because of its core systems for enterprises, and environmental requirements of the system is extremely demanding, so essays Write the demand specification, we must consider the overall operating environment planning and to operate independently of other existing systems things, can not be mixed with other systems, so as not to affect the effectiveness of operation of ERP system. The background and needs of each project are different, requirements specification writing, not necessarily all refer to the His demand for the project, but general, there are some key elements must be detailed, manufacturers in order to provide a solution, according to must program proposals. Therefore, to a type of demand for systems integration project description should contain the following a must to project:
The basic assumptions: demand a specification of the system will first describe the basic needs and to achieve the goal, Ran then, according to introduce the environmental needs. Basic assumptions of the indian, the first is the use of people want to define the number of Use the number of people the biggest factor affecting the cost; Second, we must define a financing transaction within a given time The number is expected to facilitate the estimating system capacity and structure; third is a systematic mode of operation of Now very few computer centers will adopt the host-based architecture, will normally consider the Client / Server architecture. However, the advancement of technology, SAP and Oracle have been providing Web Enable structure, if the product has been stabilized, it should be is the best proposals.
Hardware: Requires manufacturers in accordance with the basic assumptions of the conditions for the provision of appropriate hardware architecture proposals. Advice The book should contain at least three centers of environmental solutions to a Production environment in the future, this environment is the future of the above lines, the official use of the environment, the installation is complete, will To maintain a clean and complete, no test data are not there in this environment, so as not to affect Sound system, the quality of the above lines. Another one is Testing environment for testing and all the settings vary Dynamic test data should take advantage of this environment, and to keep records of the testing process, in addition to avoid repeating mistakes of the opportunities and facilitate the tracking problems of the reasons, but also will No problem, after the test that the configuration data and the initial configuration data migrated to Production The environment above. In addition to these two environments, we should also have a Development environment, To provide custom programming development and testing. In addition the proposal should also provide redundancy india Operation mechanism (Backup and Restore), high usability and stability of the (High Availability and Reliability), and data security control mechanism (Security Control System). For the estimation of the hardware capacity (Sizing), may require the vendor in accordance with company information into the Rates of growth, at least three years of business growth in volume in the system used in rush hour, CPU And hard disk utilization remained at a fixed percentage of the following, to estimate the overall capacity of the hardware.
Network infrastructure: The ability to build the company ERP line number, the office network environment and are mostly already have a set of rules Mode, can use the above line of ERP opportunity to call on companies to help re-planning office network Road Environment. The existing office network infrastructure is based on Fast Ethernet as the mainstream, but with the wireless network technology development and the rapid price decline, Wi-Fi network is becoming Road build the basic considerations. The terminal equipment of the contact, limited network speed restrictions, Can not do significant improvement; but the internet connection to the core architecture, such as different City links, different link building, different floors of the link, Core Switch and Link between the main equipment and so on, there should be a lot of space and options, allowing manufacturers on behalf of Planning, in order to achieve best interest.
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