Method and system for managing storage using an intermediate storage area

A system for managing a storage system, the system comprising:

• one or more processors;
• a memory coupled to at least one processor of the one or more processors;
• computer program instructions stored in the memory which, when executed by the at least one processor, cause the system to execute a method for managing a storage system, the method comprising:
• in response to receiving a write request from an external host for writing target data to a target address range of the storage system, writing the target data to an intermediate address range in an intermediate storage area on a first disk of the storage system;
• in response to the target data being written to the intermediate address range on the first disk, returning, to the external host, a response signal to the write request indicating that the write request is completed;
• parsing, based on an address mapping of the storage system, the target address range of the write request so as to obtain an actual address range on a second disk of the storage system;
• and
• after returning the response signal to the external host, moving the target data from the intermediate address range on the first disk to the actual address range on the second disk.