Structure and Performance of the Direct Access File System
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
Server network scalability and TCP offload
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
RXIO: Design and implementation of high performance RDMA-capable GridFTP
Computers and Electrical Engineering
QuickSAN: a storage area network for fast, distributed, solid state disks
Proceedings of the 40th Annual International Symposium on Computer Architecture
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The NFS filesystem was designed as a work-group filesystem, making a central file store available to and shared between a number of client workstations. However, more recently NFS has grown in popularity in the server room, connecting large application servers with back-end file servers. In this environment, where high-speed access to data is critical, high capacity interconnects like gigabit Ethernet, Fibre Channel and Infiniband are to be expected. With RDMA technology we can fully utilize the data capacity of these interconnects, while providing relief for host CPU and memory buses from the demands of managing a "fire hose" of data.Here we describe the use of RDMA as an RPC transport layer. We show that the NFS protocol running over this new transport achieves higher throughput than a conventional TCP transport along with a reduction in CPU utilization. The benefits of an RDMA transport are enjoyed not only by the applications that use NFS mounts, but extend to any RPC service that requires high speed and efficient transfer of large volumes of data.