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Scaling and the Server Tension between sharing and throughput File server provides semantics, including sharing Direct attach I/O provides throughput, no sharing File server is a bottleneck between clients and storage Pressure to make server ever faster and more expensive Clustered NAS solutions, e.g., Spinnaker SAN filesystems provide sharing and direct access Asymmetric, out-of-band system with distinct control and data paths Proprietary solutions, vendor-specific clients Physical security model, which we’d like to improve Client Server Client Client Client |