Optimizing Disk Layouts for Mixed Sequential Read Workloads | SNIA

Abstract

Mixtures of random writes and sequential reads are common in many database and email applications. Write anywhere file systems such as WAFL have demonstrated their ability to optimize the random writes; however, this write optimization has historically come at the expense of sequential read performance.

This talk will discuss the evolution of sequential read optimization technologies that allow WAFL to simultaneously optimize both random writes and sequential reads. Finally, using both analytical and measured results the talk will show that write anywhere file systems can outperform traditional fixed layout file systems across a broad range of mixed workloads.