DDN Assigned Patent
Data migration between high performance computing entities and storage supported by de-clustered raid, architecture with I/O activity dynamically controlled based on remaining health of storage devices
By Francis Pelletier | June 22, 2017 at 2:28 pmDataDirect Networks, Inc., Chatsworth, CA, has been assigned a patent (9,652,160) developed by Piszczek, Michael J., Laurel, MD, Cope, Jason M., Highland, MD, and Sun, Zhiwei, Laurel, MD, for a “method and system for data migration between high performance computing entities and a data storage supported by a de-clustered raid, (DCR) architecture with I/O activity dynamically controlled based on remaining health of data storage devices.“
The abstract of the patent published by the U.S. Patent and Trademark Office states: “Method and system for data migration between data generating entities and data storage devices protected by de-clustered RAID algorithm are enhanced by dynamically controlling the I/O activity towards the data storage devices, (NVM devices) based on their remaining lifespan, (health) with the goal to prevent multiple devices selected for writing a parity stripe information from simultaneous failures. This feature is rendered by polling the remaining health of NVM devices in the RAID pool, computing a weighted lifespan for each NVM device, comparing the latter to an average of all NVM devices in the pool, and adjusting the I/O activity towards the NVM device of interest accordingly. If the weighted lifespan exceeds the average lifespan in the pool, the allowed I/O activity is increased, and if the weighted lifespan is below the average for the pool, then the device in question is sent less ‘writes’.“
The patent application was filed on November 6, 2015 (14/934,314).
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