Chapter II Principles and Standards of System Design
2. 1. Design principles
The principles we follow when designing XX access control system: advanced and practical; Reliable and stable; Upgrade and maintenance.
Advanced and practical-in the design of XX access control system, the principles of advanced and practical are as follows:
Applicability of success-The products and systems used in system design must be mature products that have passed the market test for a certain period of time, especially there should be successful application cases in China.
Reasonable configuration-When designing the system, the functions to be realized are configured reasonably, and this configuration can be changed, even after the project is completed, this configuration change is possible and convenient.
Good operability-the front-end products and system software of the system have good learning and operability. Especially operability, it is necessary for managers with general education level to master the operation essentials of the system through training under the condition of rough computer operation, so as to achieve the operation level of completing duty tasks.
Reliability and stability ―― The second principle that must be observed when designing a safety system is to ensure the reliable and stable operation of the system. This principle should take into account:
Reliable operation of the system-the operation of the system needs reliability. It is required that this problem should be seriously considered from the configuration of computers to the configuration of systems and the configuration of front-end equipment, and all equipment should be carefully certified for reliability.
Easy to save and restore settings-in actual operation, even if the failure rate of the system is very low, problems will occur for various unexpected reasons. Therefore, when designing the system, we should consider setting up convenient storage and quick recovery of data.
Upgrade and maintenance-Even the most advanced systems will fall behind over time. In system design, when we choose products and systems, we should fully consider the upgrade and maintenance of the system, mainly in the following aspects:
Intelligent upgrade-the system software is the easiest to upgrade, and the selected system management software must have the free upgrade commitment of the manufacturer. The upgrade operation should be completed by the system administrator without complicated operation and special technology.
On-line maintenance-due to the characteristics of the safety system, the work of the system cannot be stopped. Because once the system stops working, there will be security holes. It can't be said that there will be loopholes for a while, but there is no guarantee that there will be no problems. Therefore, the maintenance of the system must be online, that is, the spare parts of the unit can be replaced without stopping the system.
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