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
Target output device and extreme ultraviolet light source apparatus
Method, apparatus, and manufacture for adaptation of video encoder tuning parameters
Near-field optical disk having surface plasmon amplification by stimulated emission of radiation
Battery cell separator
System for and method of providing single sign-on (SSO) capability in an application publishing environment
Estimating optical characteristics of a camera component using sharpness sweep data
Laser processing a multi-device panel
  Randomly Featured Patents
Ultraviolet radiation resistant polyphthalatecarbonate resin
Method for classifying a digital image
Field emission cathode and methods in the production thereof
Light transmissive insulation apparatus
Drug dispensing body implantable lead
Biopsy needle
Liquid crystal display apparatus
Method and arrangement for supporting multiple settings of mobility triggers in a telecommunications system
Dynamic extension of print capabilities
Process and apparatus for thermal enhancement