| 摘要 |
A remote copy system comprises a primary storage system having a primary volume, and a secondary storage system having a secondary volume forming a pair relationship with the primary volume. When the primary storage system receives a write command from a primary host computer, it stores the command in the primary volume and creates a journal added with time information. The secondary storage system receives the journal from the primary storage system and updates the secondary volume based on the received journal. The primary host computer determines, based on the operating status of the secondary storage system, either the time added to the latest journal that the secondary storage system received or the time added to the latest journal that updated the secondary volume as the recovery point objective, and provides the determined time this to the user.
|
