Conclusions and Future Work

We have designed and implemented a two-tier RAID storage system using RAID1 and RAID5. We will be finishing the implementation of a 3-tier system (RAID1, RAID5, cRAID5) on Linux by end of this year. We also intend to present a evaluation of the Linux prototype at the same time.

Adding an NVRAM layer to improve write performance needs to be investigated. Prefetching and replacement of stripes across tiers is another area[#!bib:app-prefetch!#,#!bib:trace-pref!#].