Modular storage server architecture with dynamic data...

Details Modular storage server architecture with dynamic data... Modular storage server architecture with dynamic data...

H - Electricity

04

N

H04N 21/20 (2011.01) H04N 21/218 (2011.01) H04N 21/222 (2011.01) H04N 21/23 (2011.01) H04N 21/2312 (2011.01) H04N 21/47 (2011.01) H04N 21/472 (2011.01) H04N 21/84 (2011.01) G06Q 30/02 (2012.01) G07C 13/00 (2006.01)

Patent

CA 2701621

The architecture of the present invention employs dynamic data management methods, which determine whether data should reside on disk or secondary storage (130), on which disk drives data should be stored, and how data should be replicated and/or migrated to new disk drives based on observed user (120) access patterns. These methods also migrate popular data to faster disk tracks to reduce average access time and thus improve performance. User access requests are assigned to modules based on the data stored at each module, and each module's current load (the number of request: waiting to be serviced). If the requested data is not on a disk drived, the data is retrieved from secondary storage (130), and may be stored on the disk drives for rapid subsequent access. When a requested data item on the disk drive is replicated, load balancing is performed by assigning the request to the module holding the data with the lowest load. In addition, user access requests waiting to retrieve replicated data may be dynamically and seamlessly migrated to another module based on changes in module loads.

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