Extended Functional Minimum-Storage Cooperative Regenerating for Cloud Bandwidth Problem

Cloud storage systems to protect data from corruptions, redundant data to be tolerate failures of storage and lost data should be repaired when storage fails. Regenerating codes provide fault tolerance by striping data across multiple servers, while using less repair traffic than minimized bandwidth consumption. In previous research implemented practical Data Integrity Protection (DIP) scheme for regenerating-coding based cloud storage. Functional Minimum-Storage Regenerating (FMSR) codes and it construct FMSR-DIP codes, which allow clients to remotely verify the integrity of random subsets of long-term archival data under a multi server setting. The problem is to optimize bandwidth consumption when repairing multiple failures. The cooperative repair of multiple failures can help to further save bandwidth consumption when multiple failures are being repaired. Key Terms: Cloud computing, Minimum storage, Bandwidth consumption.