Performance Analysis of Network Storage Manager System Using DAFS over InfiniBand

Abstract- High-performance data-intensive applications demand reliable, high-performance storage that clients can depend on for data storage and delivery. While network storage systems have been successful in a variety of scenarios, they often do not satisfy all the requirements of today’s computing environments. Accordingly, Emerging networking architectures such as InfiniBand (IB) have been designed to achieve low-latency and highbandwidth in a System Area Network (SAN) environment. In addition, protocols such as Direct Access File System (DAFS) have been designed to incorporate Remote Direct Memory Access (RDMA) interconnects like IB for data transfer and user-level networking. Together, these offer an attractive solution for reducing the CPU overhead on the I/O data path for network storage systems. Thus, this paper presents the implementation and experimental results in terms of throughput and CPU utilization of a network storage system that uses DAFS over IB as a transport mechanism. Consequently, the results show that NSM benefits from DAFS and IB in terms of high throughput and low CPU utilization