GridIron Assigned Two Patents

Storage Device Prefetch System
Using Directed Graph Clusters

GridIron Systems, Inc., Sunnyvale, CA has been assigned a patent (8,214,599) developed by Erik de la Iglesia and Som Sikdar, San Jose, CA, for a "storage device prefetch system using directed graph clusters."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A system analyzes access patterns in a storage system. Logic circuitry in the system identifies different address regions of contiguously accessed memory locations. A statistical record identifies a number of storage accesses to the different address regions and a historical record identifies previous address regions accessed prior to the address regions currently being accessed. The logic circuitry is then used to prefetch data from the different address regions according to the statistical record and the historical record."

The patent application was filed on Oct. 23, 2009 (12/605,119).

Behavioral Monitoring of Storage Access Patterns

GridIron Systems, Inc., Sunnyvale, CA has been assigned a patent (8,214,608) developed by Erik de la Iglesia and Som Sikdar, San Jose, CA, for a "behavioral monitoring of storage access patterns."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A storage control system monitors storage operations directed to storage blocks in a storage device. The storage control system uses arrays of counters to track a number of the storage operations, sizes of the storage operations, types of transitions between the storage operations, and time durations between different types of successive storage operations. The storage blocks are classified into different behavioral groups based on the access pattern history of the individual blocks. The behavioral group classifications are then used by the storage control system to determine when to access the storage blocks from the storage device, when to load the storage blocks into a tiering media, or when to time out the storage blocks from the tiering media."

The patent application was filed on Oct. 23, 2009 (12/605,160).