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A census of Tandem system availability between 1985 and 1990
Abstract
A census of customer outages reported to Tandem showing a clear improvement in the reliability of hardware and maintenance has been taken. It indicates that software is now the major source of reported outages (62%), followed by system operations (15%). This is a dramatic shift from the statistics for 1985. Even after discounting systematic underreporting of operations and environmental outages, the conclusion is clear: hardware faults and hardware maintenance are no longer a major source of outages. As the other components of the system become increasingly reliable, software necessarily becomes the dominant cause of outages. Achieving higher availability requires improvement in software quality and software fault tolerance, simpler operations, and tolerance of operational faults.>
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Cited by
Orthogonal defect classification-a concept for in-process measurements
Chillarege, R., Bhandari, I. S., Chaar, J. K., Halliday, M. J., Moebus, D. S., Ray, B. K., & Wong, M.-Y. (1992) · IEEE Transactions on Software Engineering · doi:10.1109/32.177364 · Cited by 792
Understanding BGP misconfiguration
Mahajan, R., Wetherall, D., & Anderson, T. (2002) · Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications · doi:10.1145/633025.633027 · Cited by 533
Sullivan, M., & Chillarege, R. (2002) · [1991] Digest of Papers. Fault-Tolerant Computing: The Twenty-First International Symposium · doi:10.1109/ftcs.1991.146625 · Cited by 346
Emulation of Software Faults: A Field Data Study and a Practical Approach
Duraes, J. A., & Madeira, H. S. (2006) · IEEE Transactions on Software Engineering · doi:10.1109/tse.2006.113 · Cited by 279
Metadata
- Authors
- Gray, J.
- Venue
- IEEE Transactions on Reliability
- Published
- 1990
- Volume
- 39
- Issue
- 4
- Pages
- 409-418
- ISSN
- 0018-9529 (ISSN-L)
- OpenAlex
- W1999667809
- Cited by
- 322
- References
- 0
- FWCI
- 10.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A census of Tandem system availability between 1985 and 1990. https://app.cochat.ai/papers/10.1109/24.58719
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- Gray, J. (1990). A census of Tandem system availability between 1985 and 1990. IEEE Transactions on Reliability. https://doi.org/10.1109/24.58719
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