A distributed storage system including a plurality of proxy server and a method for managing objects. The distributed storage system may include a plurality of data nodes, a plurality of proxy server, and a global load balancer. Each one of the plurality of data nodes may be configured to perform at least one management operation and output an operation result. Each one of the plurality of proxy servers may be configured to perform operations for controlling the plurality of data nodes to perform the at least one management operation in response to an operation request from a respective client. The global load balancer may be configured to select one proxy server from the plurality of proxy servers and allocate the selected proxy server to the respective client as the responsible proxy server. The respective client may perform the management operation through the allocated responsible proxy server.