DISTRIBUTED FILE SYSTEM AND METHOD OF SELECTING BACKUP LOCATION FOR THE SAME

摘要

A method for selecting backup location used by a DFS is to prevent data lose or unavailable while a single point of failure of a switch occurs. The DFS comprises multiple switches and multiple servers. Each server respectively connected to each connection port of each switch and uses the assigned Internet Protocol (IP) address of the connection port. When the DFS generates at least one replica based on an original copy, the replica is stored in a server different from the server storing the original copy. The physical locations of servers are decided according to the IP address of the different servers. The present embodiment assures that the server for storing the original copy and the server for storing the replica are connected to different switches. Thus, either the original copy or the replica is accessible once a switch under the DFS fails.