The Design of A Wide-Area Networked File System
نویسندگان
چکیده
Traditional networked file systems like NFS do not extend to wide-area due to network latency and dynamics introduced in the WAN environment. In this paper we proposed the design of a wide-area networked system called WireFS. WireFS is based on NFS and extends to the WAN environment by introducing a file redirector infrastructure residing between the central file server and clients. The file redirector infrastructure is invisible to both the central server and clients so that the change to NFS is minimal. This makes the interruption to the existing file service minimized when deploying WireFS on top of NFS. We show through extensive simulations that even in a WAN setting WireFS achieved comparable performance to NFS’s LAN performance. We discuss the details of WireFS implementation in the context of meta-data and data access management, and the trade-offs in the designs.
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