A method, computer program product, and computer system for receiving, by a computing device, a snapshot create operation of a volume to create a first snapshot. Existing dirty data of the volume for the first snapshot may be flushed from an in-memory cache. New writes to the volume for the first snapshot may be maintained in the in-memory cache as dirty. A snapshot create operation to the volume may be received to create a second snapshot. The new writes to the volume for the first snapshot may be combined as part of the second snapshot.