Dynamically upgradeable disk array system and method
CA 2264764 A1 · Owner: Data General Corporation · Inventors: Espy, James W.; Hawkins, Thomas B.; Bleiweiss, Scott J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dynamically upgradeable disk array chassis (10) and method for dynamically upgrading a data storage system. The dynamically upgradeable disk array chassis (10) includes a serial bus having a first bus (22) and a second bus (24). A shunt (40) connects the first bus (22) and the second bus (24) in a normal state, and has a switched state in which the first and second buses are coupled to separate outputs from the chassis. The chassis (10) includes an environmental monitor (30) which, upon connecting a new disk array chassis communicates through a communication path (42) before switching the shunt (40) to connect the serial bus with a serial bus of a new disk array chassis. A …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.