| 摘要 |
Method and system for changing size of volumes in a CDP environment. The administrator can reduce the amount of work necessary to change the size of the primary volume protected by a CDP system. The system operates in conjunction with all three implementations of the CDP, including the After-Journal(JNL), After-Journal with snapshot and Before-Journal. In the After-JNL implementation, the CDP manager writes the journal data to the JNL volume, which corresponds to the changes in the primary volume occurring after a point in time copy of the primary volume has been created in the base volume. Upon the change of the primary volume size, the CDP automatically reconfigures the related volumes used by the CDP. According to one method, CDP records a size event into the journal and uses this size event to reconfigure the related volumes. In accordance with another method, the CDP reconfigures the related volumes based on the primary volume size. |
