SGI/HPE Assigned Five Patents

Active archive bridge
Silicon Graphics International Corp. (SGI), acquired by HPE (Hewlett Packard Enterprise Development LP), Milpitas, CA, has been assigned a patent (9,613,035) developed by Christofferson, Floyd William, Fremont, CA, for a “active archive bridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A primary data storage system is connected with a separate and external active archive storage system to consolidate data and allow active archive data to be managed based on primary storage system events. The primary data storage system may be managed and maintained by an external entity, and may include a manager module such as a resource manager. The active archive system may include several tiers of storage in a hierarchical storage system and logic for moving data between and among the tiers. As data processing milestones are completed or the state of data changes, in projects stored in the primary data storage system, task milestone or state change events are detected. Event detection can trigger data movement in the active archive solution. One or more software modules implementing the present invention may detect the events and trigger active archive operations based on the events.“

The patent application was filed on March 15, 2013 (13/831,649).

Hierarchical system manager rollback
Silicon Graphics International Corp., Milpitas, CA, has been assigned a patent (9,612,920) developed by Sygulla, John Michael, Chippewa Falls, WI, Ramakrishnan, Arun, TamilNadu, India, and Slowiak, Greg, Chippewa Falls, WI, for a “hierarchical system manager rollback.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Data state rollover is performed based on data state snapshots and deltas. A series of snapshots is taken of the current data state, an original data state, and data states in between. Deltas are then generated between two sequential snapshots. This results in numerous deltas which represent the difference between consecutive snapshots. Once the deltas are acquired, the deltas may be stored along with the snapshot of the present data state. As such, previous data states may be rolled back to by determining the number of deltas to apply to the current data state to achieve the desired previous data state. In cases where the rollback or rollover fails, deltas may be played against the current data state to a point where the last known trusted and working data point existed.“

The patent application was filed on March 15, 2013 (13/831,771).

RAID set initialization
Silicon Graphics International Corp., Milpitas, CA, has been assigned a patent (9,612,745) developed by Fenske, Larry, Loveland, CO, for a “RAID set initialization.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Embodiments of the presently claimed invention enable a RAID set to appear as if it were initialized immediately after a command to initialize a RAID set is initiated. Typically, a driver or other software in the software stack intercepts the command to initialize the RAID set. The driver then responds to user application programs as if the RAID set initialization is complete, even when it is not. After intercepting the RAID set initialization command, the driver will intercept and respond to data read or write commands as if the RAID set were initialized. The driver or other software will then, typically initialize the RAID set using background tasks. In certain instances, data stored in a non-RAID configuration may be migrated to a RAID configuration during the initialization process.“

The patent application was filed on January 24, 2014 (14/164,045).

Multi-class heterogeneous clients in clustered filesystem
Silicon Graphics International Corp., Milpitas, CA, has been assigned a patent (9,606,874) developed by Moore, Daniel, North Carlton, Australia, and Gildfind, Andrew, Richmond, Australia, for a “multi-class heterogeneous clients in a clustered filesystem.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A cluster of computer system nodes connected by a storage area network include two classes of nodes. The first class of nodes can act as clients or servers, while the other nodes can only be clients. The client-only nodes require much less functionality and can be more easily supported by different operating systems. To minimize the amount of data transmitted during normal operation, the server responsible for maintaining a cluster configuration database repeatedly multicasts the IP address, its incarnation number and the most recent database generation number. Each node stores this information and when a change is detected, each node can request an update of the data needed by that node. A client-only node uses the IP address of the server to connect to the server, to download the information from the cluster database required by the client-only node and to upload local disk connectivity information.“

The patent application was filed on September 9, 2014 (14/481,666).

Shared memory eigensolver
Silicon Graphics International Corp., Milpitas, CA, has been assigned a patent (9,547,882) developed by Liao, Cheng, Pleasanton, CA, for a “shared memory eigensolver.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Disclosed herein is a shared memory systems that use a combination of SBR and MRRR techniques to calculate eigenpairs for dense matrices having very large numbers of rows and columns. The disclosed system allows for the use of a highly scalable tridiagonal eigensolver. The disclosed system likewise allows for allocating a different number of threads to each of the different computational stages of the eigensolver.“

The patent application was filed on November 10, 2014 (14/537,839).