In the last decade, Picture Archiving and Communication Systems (PACSs) have been proven to be an effective platform for increasing productivity and patient satisfaction in healthcare facilities. The rapid development of Picture Archiving and Communication Systems (PACSs) thoroughly changes the way of medical informatics communication and management. However, as the scale of a hospital's operations increases, the large amount of digital images transferred in the network inevitably decreases system efficiency. In this paper, a server cluster consisting of two server nodes was constructed. Network Load Balancing (NLB), Distributed File System (DFS), and Structured Query Language (SQL) duplication services were installed.