Violin Systems/StorCentric Assigned Three Patents

Dynamic memory management
Violin Systems LLC, San Jose, CA, has been assigned a patent (11,010,247) developed by Stoakes, Timothy, One Tree Hill, AU, and Lewis, Mark, San Jose, CA, for a “dynamic memory management system.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A memory system uses a dynamic RAID scheme to dynamically encode RAID address space geometries. The dynamic RAID scheme solves issues with the algorithmic layout approach and flat virtual address space used in conventional RAID systems. The dynamic RAID scheme can be used for any RAID algorithm and does not require static mapping. In other words, there is no requirement that each strip be located in the same relative location in memory devices and there is no requirement that stripes use the same combination of memory devices.”

The patent application was filed on May 24, 2019 (16/421,765).

Caching of metadata for deduplicated luns
Violin Systems LLC, San Jose, CA, has been assigned a patent (11,010,102) developed by Garg, Amit, Cupertino, CA, and Ratna, Vikas, San Jose, CA, for “caching of metadata for deduplicated luns.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Efficient processing of user data read requests in a deduplicated data storage system places the metadata for most frequently requested data in data structures and locations in the system hierarchy where the metadata will be most rapidly available. The total amount of such metadata makes storing all of the metadata in high speed memory expensive, and the system and method described uses both the temporal and the spatial characteristics of the user system activity in any epoch to adjust the contents of metadata cache so as to respond to the dynamics of a multi user or multi-application environment where the storage system is not made aware of the time changing mix of operations except by observation of the individual requests. A history record is used to promote metadata from the slow memory to the fast memory, and a process selection may be adjusted based on the address-space activity.”

The patent application was filed on October 4, 2018 (16/152,292).

Memory system with multiple striping of RAID groups
Violin Systems LLC, San Jose, CA, has been assigned a patent (11,010,076) developed by Bennett, Jon C. R., Sudbury, MA, for “memory system with multiple striping of RAID groups and method for performing the same.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A data memory system is described, where there may be an asymmetry in the time needed to write or erase data and the time needed to read data. The data may be stored using a RAID data storage arrangement and the reading, writing and erasing operations on the modules arranged such that the erasing and writing operations may be performed without significant latency for performing a read operation. Where a failure of a memory module in the memory system occurs, methods for recovering the data of the failed module are disclosed which may selected in accordance with policies that may relate to the minimizing the possibility of irretrievable data loss, or degradation of latency performance.”

The patent application was filed on June 18, 2019 (16/444,176).