The Serial Storage Architecture and Fibre Channel-Arbitrated Loop interfaces offer a simple cabling system, higher bandwidth, the ability to connect more than 100 disks, fault tolerance, and fair accesses on the channel. This article investigates the performance of these two emerging serial-storage interfaces for fairness, latency, overhead, and aggregate throughput under various traffic loads.
Bibliographical noteFunding Information:
We thank Dave Archer, Gary Delp, Larry Whitley, and Walter Krapohl at IBM Rochester and Horst Truestedt, Edward Clausell, Richard Rolls, Michelle Tidwell, and Howard Rankin at IBM Storage System Division for numerous discussions on the details of SSA. We also thank Cort Fergusson, Mike Miller, and Jim Coomes at Sea-gate Technology for providing us valuable information on FC-AL. The trace data used in our study was provided by William Glantz at IBM Rochester. Without their assistance, we could not have completed our study. This work is partially supported by the University of Minnesota-IBM Shared Research Project, NSF Grant CDA-9502979, and equipment from Dell Computer Corp. and IBM.