1. A management method for an object-based storage system, the object-based storage system comprising a client, an Object-Based Storage Device (OBSD), a metadata server and an interconnect network, wherein the interconnect network connects the client, the OBSD, and the metadata server; wherein the OBSD comprises a root object, a partition object, a collection object, an user object, and a function object; and wherein the function object comprises a user function object and a system function object; and the management method comprising the OBSD responding to a client request for the user object; the OBSD calling the user function object to execute the client request; the system function object reading the root object attributes and the real time system status information of the OBSD, and determining whether the object-based storage system is in a specific condition; and if the object-based storage system is in the specific condition, the system function object performing a predetermined specific system management functions.