NC Cloud A Network-Coding-based Storage System in a Cloud-of-Clouds
Rs3,000.00
10000 in stock
SupportDescription
To provide fault tolerance for cloud storage, recent studies propose to stripe data across multiple cloud vendors. However, if a cloud suffers from a permanent failure and loses all its data, we need to repair the lost data with the help of the other surviving clouds to preserve data redundancy. We present a proxy-based storage system for fault-tolerant multiple-cloud storage called NC Cloud, which achieves cost-effective repair for a permanent single-cloud failure. NC Cloud is built on top of a network-coding-based storage scheme called the functional minimum-storage regenerating (FMSR) codes, which maintain the same fault tolerance and data redundancy as in traditional erasure codes (e.g., RAID-6), but use less repair traffic and hence incur less monetary cost due to data transfer. One key design feature of our FMSR codes is that we relax the encoding requirement of storage nodes during repair, while preserving the benefits of network coding in repair. We implement a proof-of-concept prototype of NC Cloud and deploy it atop both local and commercial clouds. We validate that FMSR codes provide sign if cant monetary cost savings in repair over RAID-6 codes, while having comparable response time performance in normal cloud storage operations such as upload/download.
Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet.