Performance Modeling and Analysis of Flash-Based Storage Devices
Source: George Washington University
Flash-based Solid-State Drives (SSDs) will become key components in future storage systems. An accurate performance model will not only help understand the state-of-the-art of SSDs, but also provide the research tools for exploring the design space of such storage systems. Although over the years many performance models were developed for hard drives, the architectural differences between two device families prevent these models from being effective for SSDs. The hard drive performance models cannot account for several unique characteristics of SSDs, e.g., low latency, slow update, and expensive block-level erase. In this paper, the authors utilize the black-box modeling approach to analyze and evaluate SSD performance, including latency, bandwidth, and throughput, as it requires minimal a priori information about the storage devices.