RAIC: Redundant Array of Inexpensive Cloud

Abstract

For the convenience, the cloud storage service has been used in daily life very commonly. However, the service sometimes suffers from the availability problems. They may not be able to be accessed timely for reasons (e.g. service down, network connection banned). It reduces the availability of the cloud services. To overcome the problems and challenges of backing up data on cloud services, we propose a new storage architecture, RAIC, which uses the cloud storage service like a disk and make them into a RAID-like system to provide the users with a high availability storage service. We have designed and implemented a prototype system for RAIC. With the evaluation of the system, we find that RAIC performs efficient. The upload performance is about 90.6% of the ideal upload bandwidth and 74.2% for the download performance. © 2012 Springer-Verlag.