Facebook Assigned Two Patents

File storage system based on coordinated exhaustible and non-exhaustible storage
Facebook, Inc., Menlo Park, CA, has been assigned a patent (9,489,391) developed by Michael, Amir Meir, San Mateo, CA, Liu, Song, Fremont, CA, Taylor, Jason Matthew, Berkeley, CA, Maguire, Yael, Boston, MA, Brashers, Per, Oakland, CA, and Frachtenberg, Eitan, Palo Alto, CA, for a “file storage system based on coordinated exhaustible and non-exhaustible storage.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A file storage system may be implemented by coordinating non-exhaustible and exhaustible storage devices. The exhaustible storage devices may be lower grade flash based storage devices. The non-exhaustible storage devices may be storage devices based on magnetic recording mechanisms or higher grade flash storage. The file storage system may store received content items on the exhaustible storage devices. The file storage system may additionally store metadata for the content items and/or the file storage system on the non-exhaustible storage devices. During operation, the file storage system may globally optimize the content items on the exhaustible storage devices such that more heavily accessed items are moved to exhaustible storage devices that have experienced relatively few data operations. The file storage system can move less frequently accessed content items to exhaustible storage devices that have experienced a relatively large number of data operations. As such, the operation lifetime of the exhaustible storage devices as a whole can be prolonged.“

The patent application was filed on October 28, 2014 (14/526,461).

Optical cold storage wherein plurality of first and second chunks
are encoded and placed on different optical disks
Facebook, Inc., Menlo Park, CA, has been assigned a patent (9,483,200) developed by Coglitore, Giovanni, Saratoga, CA, Vijayrao, Narsing, Santa Clara, CA, and Patiejunas, Kestutis, Sammamish, WA, for a “system and method for optical cold storage wherein plurality of first and second chunks are encoded and placed on different optical disks.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Various embodiments, (‘systems’) are described for transferring data from a primary storage, e.g., magnetic disk drives, solid state drives, (etc.) to an optical cold storage rack. The optical cold storage rack may include many physical optical storage disks, but a much smaller number of burners and readers, (e.g., optical disk drives). When data is to be transferred to the optical cold storage rack, the system may generate a plan for performing the transfer. ‘Migration worker’ components may then implement the plan and may be exclusively dedicated to implementing such plans. In various embodiments, the plan may specify how large data file ‘aggregates’, (collections of portions of one or more data files) are to be distributed across optical disks, (‘disks’) to improve throughput during subsequent reading operations from the optical cold storage rack. The plan may also anticipate the relation between the limited number of burners/readers and the overall optical cold storage rack disk capacity.“

The patent application was filed on November 3, 2014 (14/531,312).