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|1. (WO2017064770) STORAGE SYSTEM AND CONTROL METHOD FOR STORAGE SYSTEM|
|Title:||STORAGE SYSTEM AND CONTROL METHOD FOR STORAGE SYSTEM|
In order to create, at a remote site, a specific-point-in-time backup of a volume while minimizing the response time required to update the volume, there is provided a storage system in which: a first storage device and a second storage device transfer a journal stored in a first journal volume to the second storage device; the second storage device writes the transferred journal to a second journal volume; the second storage device reads the journals in the second journal volume in order from the earliest journal; the second storage device causes the read journals to be reflected in a second data volume; the first storage device creates, in the first journal volume, a journal including a marker, when a specific condition is met; and the second storage device creates a snapshot of the second data volume upon detecting a marker in a read journal.