在实时监控系统中，经常需要浏览当前时间之前的历史数据来对设备运行和故障状态进行检测分析。
In the real - time monitor system, it is often necessary to detect and analyze the operation and the fault state of the equipments by browsing the history data of the time before current time.
网上设备管理系统既实现了对设备资源信息、状态和使用情况的实时监控，也实现了对设备管理流程的有效管理。
Microsoft IIS system acts as the Web server. The system manages the device's information, state and real-time usage, as well as controls the device management procedure.
它主要用于实时监控被网管设备的通信状态，周期性收集、记录、查询、统计被网管设备的各种数据。
Its main function is to monitor and control the communication of management devices, collect, store, search, account many kinds of data from management devices.
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