Data storage method and system

The invention is suitable for the technical field of storage, and provides a data storage method and a data storage system. The method comprises the following steps of: resolving storage data written in by a host computer, and judging the type of the written-in storage data; when the storage data is file content data, controlling to write the file content data into a vacant first Block; and when the storage data is file system information, controlling to write the file system information into a vacant second Block. In the embodiment of the invention, the copying times of stored valid data is reduced, and the speed and the efficiency of data storage are improved by the following steps of: solving the storage data written in by the host computer, and judging the type of the written-in storage data; controlling to write the file content data into the vacant first Block when the storage data is the file content data; and controlling to write the file system information into the vacant second Block when the storag