In this study, we consider the relationship of client IO requests submitted to a file server and the server’s disk subsystem IO traffic. We collected traces of client-server IOs and, during each trace period, we also traced server storage subsystem workloads. We analyze and compare trace pairs collected in each trace period. We evaluate file server performance and investigate the relationship between client file requests and server disk workloads.

Workloads of network file server disk IO subsystems have very different characteristics than ob- served in timesharing or local IO systems described in the literature. In this study, we provide a detailed analysis of both disk and network workload traces collected from Novell NetWare network file servers. We characterize file server disk and network traffic and give insights into access pat- terns; we also consider the relationship between network and disk throughput. Measurements and statistics presented will aid designers and managers in designing and tuning network file servers and their disk subsystems. Our results can be used by analysts to parameterize synthetic models for file server and server subsystem studies.

Workloads of network file server disk IO subsystems have very different characteristics than observed in time sharing or local IO systems described in the literature. In this study we provide a detailed analysis of disk workload traces collected from network file servers. Our results characterize file server disk traffic and give insights into file server disk access patterns. Measurements and statistics presented in this paper will aid designers and managers in developing and tuning disk subsystems for network file servers. Moreover, our results can be used by analysts to parameterize synthetic workloads for server subsystem studies.

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