Research and Implementation on Model for High Availability of Enterprise Information System

As information technology is applied in the modern enterprise management such as financing, marketing, enterprise resource planning widely, the high availability of enterprise information systems is more and more important. The key point of designing an enterprise information system is to choose appropriate high availability implementation models. In this paper first we introduce some general design principles on high availability of enterprise information systems, and second propose set of high availability implementation models such as Check-Point (CP) model, Process-Pair (PP) model, Recovery-Process (RP) model, Alternative-Process (AP) model, etc.A comparative analysis is performed to identify the applicability of the CP, PP, RP, AP implementation models.