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19 May 2003 Complete continuous-availability PACS archive server solution
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Failure of PACS archive server would cripple the entire PACS operation. Last year we demonstrated that it was possible to design a fault-tolerant (FT) server with 99.999% uptime. The FT design was based on a triple modular redundancy with a simple majority vote to automatically detect and mask a faulty module. The purpose of this presentation is to report on its continuous developments in integrating with external mass storage devices, and applying as an Application Service Provider (ASP) back-up archive server. ASP back-up archive is to provide instantaneous automatic backup of PACS image data and instantaneous recovery of PACS image data in the event of disaster. FT server is used as an off-site backup-archive PACS server from the main PACS archive locations. Clinical data from a hospital PACS is sent to the FT server in parallel to the exams being archived in the main server. A disaster scenario is simulated and the PACS data is sent from the offsite FT server back to the hospital PACS. The reliability, functionality and performance of the FT server and external mass storage devices are evaluated during the simulation.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zheng Zhou, Fei Cao, Brent J. Liu, H. K. Huang, Jianguo Zhang, X. Zhang, and Greg T. Mogel "Complete continuous-availability PACS archive server solution", Proc. SPIE 5033, Medical Imaging 2003: PACS and Integrated Medical Information Systems: Design and Evaluation, (19 May 2003);


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