Storage device array architecture with copyback cache
CA 2058734 C · Owner: Lui, Albert · Inventors: Lui, Albert; Stallmo, David Charles; Brant, William Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fault-tolerant storage device array using a copyback cache storage unit for temporary storage. When a Write occurs to the RAID system the data is, immediately written to the first available location in the copyback cache storage, unit. Upon completion of the Write to the copyback cache storage unit the , host, CPU is immediately informed that the Write was successful. Thereafter further, storage unit accesses by the CPU can continue without waiting for an errorcorrection block update for the data just written In a first embodiment of , the, invention during idle time for relevant storage units of the storage system an, error-correction block is computed for each "pending" data block on …
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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 January 3, 1992 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2014.
- 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.