RAPID-Cache - a reliable and inexpensive write cache for disk I/O systems
Date of Original Version
The redundant, asymmetrically parallel, and inexpensive disk (RAPID) cache, consists of two redundant write buffers on top of a disk system, is presented. The RAPID cache presents an asymmetric architecture with a fast-write-fast-read RAM and a fast-write-slow-read NVRAM. The asymmetric cache allows cost effective designs for very large write caches for high end disk I/O systems that would otherwise have to use dual copy, costly NVRAM caches. The analysis and trace driven simulation results indicate that the RAPID-cache has significant reliability and cost advantage over dual copy caches.
IEEE High-Performance Computer Architecture Symposium Proceedings
Hu, Yiming, Qing Yang, and Tycho Nightingale. "RAPID-Cache - a reliable and inexpensive write cache for disk I/O systems." IEEE High-Performance Computer Architecture Symposium Proceedings , (1999): 204-213. doi:10.1109/HPCA.1999.744364.