Uninterrupted system availability is a critical requirement for enterprise operations, yet traditional high-availability clusters suffer from limitations such as single points of failure and inefficient resource allocation. This paper introduces and evaluates the Integrated High Availability Cluster (iHAC), a hybrid architecture designed to enhance system resilience and performance. The iHAC integrates the strengths of active-active and active-passive configurations to optimize workload distribution and failover capabilities. We conducted a comparative analysis, simulating iHAC against conventional (legacy) clusters using Riverbed Modeler (OPNET). The results reveal significant performance improvements: iHAC reduced the average HTTP page response time by over 40%, from five seconds in a traditional active-active setup to under three seconds. This was achieved alongside reduced network latency and increased overall throughput. This study validates the iHAC architecture as a superior design for building robust, high-performance systems, offering a practical path to greater operational continuity and resilience.

翻译：系统的不间断可用性是企业运营的关键需求，然而传统高可用集群存在单点故障、资源分配效率低下等局限性。本文介绍并评估了集成高可用集群（iHAC）——一种旨在增强系统弹性与性能的混合架构。iHAC协同整合了双活与主备配置的优势，以优化工作负载分布和故障转移能力。我们通过Riverbed Modeler（OPNET）模拟仿真，对iHAC与传统（遗留）集群进行了对比分析。结果显示性能显著提升：iHAC将平均HTTP页面响应时间从传统双活配置下的五秒缩短至三秒以内，降幅超过40%。与此同时，网络延迟降低且总吞吐量提高。本研究验证了iHAC架构作为构建鲁棒高性能系统的优越设计方案，为增强运营连续性与弹性提供了可行路径。