Resources Contact Us Home
Remote copy system

Image Number 6 for United States Patent #8131963.

Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a target volume. Once data is received from a host, each of the plural storage systems creates write-data management information having sequential numbers and reference information and sends, to one of the primary storage systems, the data, sequential number and reference information. Each of the secondary storage systems records reference information corresponding to the largest sequential number among serial sequential numbers and stores, in a target volume in an order of sequential numbers, data corresponding to reference information having a value smaller than the reference information based on the smallest value reference information among reference information recorded in each of the plural secondary storage systems.

  Recently Added Patents
Resonant oscillator with start up and shut down circuitry
Digital processing method and system for determination of optical flow
Formwork release composition and use thereof
Domestic soda-water preparing device
Mold for nanoimprinting, its production process, and processes for producing molded resin having fine concavo-convex structure on its surface and wire-grid polarizer
Method and apparatus for over-the-air activation of neighborhood cordless-type services
JTAG multiplexer with clock/mode input, mode/clock input, and clock output
  Randomly Featured Patents
Method and apparatus for compensating for environmental effect
System recovery in a heating, ventilation and air conditioning network
Sealed compound bearing
Continuous, baseboard style electrical connector
Wrist support brace for alleviating contractures
Heat exchange catheter and method of use
Semiconductor memory device for controlling cell block with state machine
Organo-mercurial materials
Stabilizer for photocomposition matrix
Device for the tight connection of two enclosures