Redundant computer system which boots one system as the primary computer from a shared drive
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United States of America Patent
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-
Jul 9, 1996
Grant Date -
N/A
app pub date -
Mar 10, 1995
filing date -
Apr 28, 1994
priority date (Note) -
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Abstract
A high-availability computer system comprises at least two processors, each having its own private disk drive, and a shared disk drive, accessible by both processors. Each of the private disk drives holds system files for establishing a processor as a secondary processor, and the shared disk drive holds system files for establishing a processor as a primary processor. When it boots up, each processor decides whether to use the system files from its private disk so as to become a secondary, or to use the system files from the shared disk so as to become the primary. As as result, after a system failure or reboot, either processor can pick up the characteristics of the the primary processor, and will have all the most up-to-date primary information available to it.
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