Pure Storage Assigned Two Patents

Scheduling of I/O in SSD environment
Pure Storage, Inc., Mountain View, CA, has been assigned a patent (8,589,655) developed by six co-inventors for a system and method “for effectively scheduling read and write operations among a plurality of solid-state storage devices.”

The co-inventors are John Colgrove, Los Altos, CA, John Hayes, Bo Hong, Mountain View, CA, Feng Wang, Sunnyvale, CA, Ethan Miller, Santa Cruz, CA, and Craig Harmer, San Francisco.

The abstract of the patent published by the U.S. Patent and Trademark Office states:”A system and method for effectively scheduling read and write operations among a plurality of solid-state storage devices. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array comprises an I/O scheduler. The characteristics of corresponding storage devices are used to schedule I/O requests to the storage devices in order to maintain relatively consistent response times at predicted times. In order to reduce a likelihood of unscheduled behaviors of the storage devices, the storage controller is configured to schedule proactive operations on the storage devices that will reduce a number of occurrences of unscheduled behaviors.”

The patent application was filed on Sept. 15, 2010 (12/882,854).

Managing multiple fingerprint tables in de-dupe storage system
Pure Storage, Mountain View, CA, has been assigned a patent (8,589,640) developed by five co-inventors for “a system and method for managing multiple fingerprint tables in a deduplicating storage system.”

The co-inventors are John Colgrove, Los Altos, CA, John, Mountain View, CA, Ethan Miller, Santa Cruz, CA, Joseph S. Hasbani, and Cary Sandvig, Palo Alto, CA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A system and method for managing multiple fingerprint tables in a deduplicating storage system. A computer system includes a storage medium, a first fingerprint table comprising a first plurality of entries, and a second fingerprint table comprising a second plurality of entries. Each of the first plurality of entries and the second plurality of entries are configured to store fingerprint related data corresponding to data stored in the storage medium. A storage controller is configured to select the first fingerprint table for storage of entries corresponding to data stored in the data storage medium that has been deemed more likely to be successfully deduplicated than other data stored in the data storage medium; and select the second fingerprint table for storage of entries corresponding to data stored in the data storage medium that has been deemed less likely to be successfully deduplicated than other data stored in the storage medium.”

The patent application was filed on Oct. 14, 2011 (13/273,858).