×

Remote copy system

  • US 8,700,725 B2
  • Filed: 12/23/2011
  • Issued: 04/15/2014
  • Est. Priority Date: 06/23/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A remote copy system, comprising:

  • a first storage system including a first storage controller and a first data volume, the first storage controller being configured to receive a write request from a first host and to store write data associated with the write request to the first data volume;

    a second storage system coupled to the first storage system, including a second storage controller and a first storage area, the second storage controller receiving first data containing the write data to copy the stored data in the first data volume to the first storage area; and

    a third storage system coupled to the second storage system, including a third storage controller, a second storage area and a second data volume,wherein the write request from the first host to the first storage system completes after the second storage system completes a process of receiving the first data, andwherein the third storage controller is configured to complete a process of storing the first data received from the second storage system to the second storage area at a timing that is independent of a completion of processing of the write request from the first host.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×