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“Out-of-band” Value Proposition Out-of-band allows a client to use more than one storage address for a given file, directory or closely linked set of files Parallel I/O direct from client to multiple storage devices Scalable capacity: file/dir uses space on all storage: can get big Capacity balancing: file/dir uses space on all storage: evenly Load balancing: dynamic access to file/dir over all storage: evenly Scalable bandwidth: dynamic access to file/dir over all storage: big Lower latency under load: no bottleneck developing deep queues Cost-effectiveness at scale: use streamlined storage servers pNFS standard leads to standard client SW: share client support $$$ |