The Behavior Analysis of Flash-Memory Storage Systems∗

Performance and reliability are two major design concerns of flash-memory storage systems, especially for low-cost products. Although various excellent flash-memory management schemes are proposed, there is little work done on how to evaluate the designs or im-plementations of flash-memory storage systems. Many of the existing evaluation workloads for flash-memory storage systems still rely on those based on hard disks. This work aims at the needs of behavior analysis of flash-memory storage systems and their evaluations. In particular, a set of evaluation metrics and their corre-sponding access patterns are proposed. The behaviors of flash memory are also analyzed in terms of perfor-mance and reliability issues.