Abstract: Provided are a storage apparatus, a storage management method, and a storage management program capable of performing a backing-up operation under the condition that a host computer is in operation. A storage apparatus 1 according to the present invention includes a cache memory 20, a storage device 30 that stores data, a data copy unit 12 that copies the data to be stored in the storage device 30 in a storage device for duplication 40, and a control unit 11 in which, when writing data in the storage device 30, if the data copy unit 12 is executing a separation copy which does not allow data rewriting during copying, the data to be written in the storage device 30 is stored in the cache memory 20, and after completing the separation copy, the data stored in the cache memory 20 is written in the storage device 30.

Abstract: Provided are a storage apparatus, a storage management method, and a storage management program capable of performing a backing-up operation under the condition that a host computer is in operation. A storage apparatus 1 according to the present invention includes a cache memory 20, a storage device 30 that stores data, a data copy unit 12 that copies the data to be stored in the storage device 30 in a storage device for duplication 40, and a control unit 11 in which, when writing data in the storage device 30, if the data copy unit 12 is executing a separation copy which does not allow data rewriting during copying, the data to be written in the storage device 30 is stored in the cache memory 20, and after completing the separation copy, the data stored in the cache memory 20 is written in the storage device 30.

Abstract: Each of a plurality of hosts requests one of system coupling apparatuses to lock one of an inter-host shared resources, and stores lock information notified by the system coupling apparatus; each of the plurality of system coupling apparatuses locks an inter-host shared resource whose locking has been requested by one of the hosts, holds lock information indicating the locking, and notifies the requesting host of the lock information; one of the plurality of hosts, when one of the plurality of system coupling apparatuses fails, causes lock information held by other normal system coupling apparatuses to be deleted; and one of the other normal system coupling apparatuses is requested to lock said inter-host shared resource on the basis of lock information stored in the requesting host.