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Proceedings Paper

Complete continuous-availability PACS archive server solution
Author(s): Zheng Zhou; Fei Cao; Brent J. Liu; H. K. Huang; Jianguo Zhang; X. Zhang; Greg T. Mogel
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Paper Abstract

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.

Paper Details

Date Published: 19 May 2003
PDF: 9 pages
Proc. SPIE 5033, Medical Imaging 2003: PACS and Integrated Medical Information Systems: Design and Evaluation, (19 May 2003); doi: 10.1117/12.481938
Show Author Affiliations
Zheng Zhou, Children's Hospital Los Angeles/Univ. of Southern California (United States)
Fei Cao, Children's Hospital Los Angeles/Univ. of Southern California (United States)
Brent J. Liu, David Geffen School of Medicine/Univ. of California/Los Angeles (United States)
H. K. Huang, Children's Hospital Los Angeles/Univ. of Southern California (United States)
Jianguo Zhang, Shanghai Institute of Technical Physics (China)
X. Zhang, Shanghai Institute of Technical Physics (China)
Greg T. Mogel, Children's Hospital Los Angeles/Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 5033:
Medical Imaging 2003: PACS and Integrated Medical Information Systems: Design and Evaluation
H. K. Huang; Osman M. Ratib, Editor(s)

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