Start-Up DSSD Assigned Two Patents

Storage system with self describing data

DSSD, Inc., Menlo Park, CA, has been assigned a patent (8,370,567) developed by Jeffrey S. Bonwick, Los Altos, CA, and Michael W. Shapiro, San Francisco, CA for a "storage system with self describing data."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A method for storing data, including receiving a request to write a first datum defined using a first object ID and a first offset ID to persistent storage. The method further including determining a first physical address in the persistent storage, where the first physical address comprises a first block ID and first sub block ID. The method further includes writing the first datum to the first physical address, generating a first table of contents entry (TE) comprising the first object ID, the first offset ID, and the first sub block ID, and writing the first TE to a second physical address in the persistent storage, where the second physical address comprises the first block ID and a second sub block ID corresponding to the second sub block ID, and where the second sub block is located within a first block corresponding to the first block ID."

The patent application was filed on March 23, 2012 (13/428,771).

Storage system
with multicast DMA and unified address space

DSSD, Inc., Menlo Park, CA, has been assigned a patent (8,407,377) developed by Michael W. Shapiro, San Francisco, CA, Jeffrey S. Bonwick, Los Altos, CA, and William H. Moore, Fremont, CA, for a "storage system with multicast DMA and unified address space."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "A system and method for clients, a control module, and storage modules to participate in a unified address space in order to and read and write data efficiently using direct-memory access. The method for reading data includes determining a first location in a first memory to write a first copy of the data, a second location in a second memory to write a second copy of the data, where the first memory is located in a first storage module including a first persistent storage and the second memory is located in a second storage module including a second persistent storage. The method further includes programming a direct memory access engine to read the data from client memory and issue a first write request to a multicast address, where the first location, the second location, and a third location are associated with the multicast address."

The patent application was filed on July 23, 2012 (13/555,791).