Abstract
The paper is focused on available server management in Internet connected network environments. The local backup servers are hooked up by LAN and replace broken main server immediately and several different types of backup servers are also considered. The remote backup servers are hooked up by VPN (Virtual Private Network) with high-speed optical network. A Virtual Private Network (VPN) is a way to use a public network infrastructure and hooks up long-distance servers within a single network infrastructure. The remote backup servers also replace broken main severs immediately under the different conditions with local backups. When the system performs a mandatory routine maintenance of main and local backup servers, auxiliary servers from other location are being used for backups during idle periods. Analytically tractable results are obtained by using several mathematical techniques and the results are demonstrated in the framework of optimized networked server allocation problems. The operational workflow give the guidelines for the actual implementations.
Highlights
In light of the recent acts of terrorism and cyberterrorism, it becomes imperative to provide a network security, but to offer a paradigm of a “network security system” which can be applied to networking for the business continuity such as stock market, postal offices, nuclear power plants, and government offices
Tractable results are obtained by using several mathematical techniques and the results are demonstrated in the framework of optimized networked server allocation problems
Local backup servers are located in same area and hooked up via LAN (Local Area Network) and he remote backup servers are geometrically separated with main servers but remote backups are hooked up by a Virtual Private Network (VPN) with high-speed optical Internet
Summary
In light of the recent acts of terrorism and cyberterrorism, it becomes imperative to provide a network security (that has never been a full-proof), but to offer a paradigm of a “network security system” which can be applied to networking for the business continuity such as stock market, postal offices, nuclear power plants, and government offices. The system tries not exhaust this quantity and sets up a smaller control number N During this period of time, the system is observed only upon some random epochs of time, while dropped machines line up in the “waiting room”. If at one of these observation epochs, the number of defective machines reaches or exceeds N (after some delay), the repairman returns to his duties, a busy period begins, and thereby the busy cycle continues. This is a more realistic scenario of a reliability system that functions under restricted observations, at least during its maintenance periods. The mathematical values are the initial conditions for network management operations and the detailed workflow will be explained in this paper
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