Patent for Storage System Using Real Data Storage Area Dynamic Allocation Method Published by USPTO

Strategic Insights -

According to patent literature 1, existing storage systems can arrange microprocessors and local memories within a storage subsystem. However, these systems often require a microprocessor to access address mapping information, which can degrade performance. The present invention addresses this issue by storing address mapping information in a storage device and enabling a microprocessor with ownership of the virtual storage device to access it. This improvement aims to enhance access performance in storage systems.

Key Takeaways:

  • The patent, number 9122415, was filed on January 15, 2014, and published online on September 1, 2015, by the United States Patent and Trademark Office (USPTO).
  • The invention aims to improve access performance in storage systems by storing address mapping information in a storage device and enabling a microprocessor with ownership of the virtual storage device to access it.
  • The solution has three characteristics: (1) assigning a real data storage area to a virtual storage area, (2) storing address mapping information in a shared memory and a page assigned to the virtual storage area, and (3) storing cache control information in a local memory of the microprocessor.
  • The patent literature mentions two critical drawbacks: (1) the address mapping information required for input/output processing increases proportionally with the number and capacity of virtual volumes, and (2) accessing address mapping information stored in a storage device with inferior access performance can degrade system performance.
  • The present invention solves these problems by storing address mapping information in a storage device and enabling a microprocessor to access it.
  • The patent mentions Hitachi, Ltd. as the assignee for this patent.
  • The patent mentions Kohei Tatara as the inventor of this patent.

Statistics:

  • The patent was published online on September 1, 2015, by the USPTO.
  • U.S. Patent Number 9122415 was granted on September 15, 2015.
  • The patent was filed on January 15, 2014.

Sources:

  • Tatara, Kohei. Storage System Using Real Data Storage Area Dynamic Allocation Method. U.S. Patent Number 9122415, filed January 15, 2014, and published online on September 1, 2015. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9122415.PN.&OS=PN/9122415RS=PN/9122415