A virtualized fusion storage sub-system comprises a first server node; a second server node; and a common storage pool including a hard disk cluster. The first and the second server nodes simultaneously access the common storage pool. Said sub-system has an operation system installed thereon. A storage space unit is defined in the operation system. The first and the second server nodes access the hard disk cluster through the storage space unit so as to carry out synchronization of the first and the second server nodes, thereby assuring a storage redundancy configuration. The operation system has a file server and a virtual server arranged therein. The virtual server is correspondingly connected to the file server on a basis of stacking of application programs of the operation system so as to carry out rapidly match therebetween.