Quantum Assigned Four Patents

Media drive with built-in controller for improved functionality
Quantum Corporation, San Jose, CA, has been assigned a patent (10,908,819) developed by Willis, Jr., Thomas Carroll, Westiminster, CO, for a “media drive system with built-in controller for improved functionality.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A media drive system (310) configured for use with a media drive (314) that performs read/write operations relative to a media cartridge (316) includes a system housing (312). The system housing (312) includes a housing body (312A) and a controller (350) that is secured to the housing body (312A). The controller (350) is configured to control functionality of the tape drive (314). More specifically, the inclusion of the controller (350) as part of the system housing (312) enables the media drive system (310) to achieve greatly enhanced functionality. For example, the media drive system (310) can greatly enhance the speed of various desired read/write operations performed within the media drive, (314), especially when the requested files or file segments are not necessarily initially provided in sequential order on the media cartridge (316). The controller (350) can include one or both of a processor (352) and a memory system (354).”

The patent application was filed on April 25, 2017 (15/496,421).

Dynamically variable ECC system with hybrid rateless reed-solomon ECCs
Quantum Corporation, San Jose, CA, has been assigned a patent (10,903,858) developed by Saliba, George, Boulder, CO, for a “dynamically variable error correcting code (ECC) system with hybrid rateless reed-solomon ECCs.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Example apparatus and methods control whether and when hybrid rateless Reed Solomon (RS) error correcting codes (ECC) for a message are produced, stored, and distributed. The control may be based on a property, (e.g., reliability, error state, speed) of a message recipient. Example apparatus and methods may also control whether and when fountain codes for the message are produced, stored, and distributed. Once again, the control may be based on a property of a message or ECC recipient. Both the hybrid rateless RS ECC and the fountain codes may be produced from data stored in a modified RS matrix. The modified RS matrix may store row-centric error detection codes (EDC) instead of conventional cyclic redundancy check (CRC) characters. The modified RS matrix may store column-centric ECC that may be produced serially. Different types or numbers of ECC may be produced, stored, and provided for different messages stored at different recipients.”

The patent application was filed on May 27, 2015 (14/722,809).

Flexible synchronous file system replication
Quantum Corporation, San Jose, CA, has been assigned a patent (10,896,156) developed by Jarvis, Ben, Mendota Heights, MN, and Lord, Stephen, Prior Lake, MN, for a “flexible synchronous file system replication.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Embodiments include an apparatus for replicating a file system (FS) that stores a file in a first location in a first data storage device, the apparatus comprising a query circuit configured to generate a spatial query that identifies a primary directory tree in the FS, and to receive a response to the query from the FS, where the response identifies a range of the primary directory tree in which a changed file may be found, a scan filter circuit configured to generate a scan filter based on the response, where the scan filter defines a portion of the primary directory tree that is smaller than the primary directory tree to search for a changed file, and a replication circuit configured to scan the portion of the primary directory tree, and upon detecting a changed file, replicate the changed file from the first location to a different location.”

The patent application was filed on July 24, 2018 (16/043,693).

Adaptive pre-fetch
Quantum Corporation, San Jose, CA, has been assigned a patent (10,877,893) developed by Doerner, Don, San Jose, CA, for an “adaptive pre-fetch.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Adaptive pre-fetching devices can predict data placement to improve the operating and/or electrical efficiency of a data storage system. A future input/output operation can be predicted from a current input/output operation, the state of the data storage apparatus, relationships between data currently being processed and data previously processed, or other factors. The apparatus and methods can improve data storage efficiency by selectively pre-fetching data, relocating data on the data storage apparatus, the backing storage, or within a plurality of data storage apparatus based on working set predictors to reduce cache misses or outperform fetch processes from the backing storage.”

The patent application was filed on February 6, 2019 (16/268,868).