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Modern distributed storage systems often store redundant data in multiple replications or erasure coding according to their access frequencies. Multiple replications scheme is well-performance for hot data while erasure coding scheme is storage-efficient for warm and cold data. When hot data turn cold, an encoding procedure starts to do the conversion. However, due to sequential striping, current...
Erasure codes are widely used in distributed storage systems to prevent data loss. Traditional erasure codes suffer from a typical repair-bandwidth problem in which the amount of data required to reconstruct the lost data, referred to as the repair bandwidth, is often far more than the theoretical minimum. While many novel erasure codes have been proposed in recent years to reduce the repair bandwidth,...
This paper presents a theoretical and experimental framework based on dynamics to model and analyze energy efficient distributed storage systems. A dynamics analysis model based on Cellular Automata (CA), called DSSCA, is proposed to evaluate distributed Object-based Storage (OBS) systems. DSSCA can have either finite or infinite size with high scalability. Each node represents an Object-based Device...
Object-oriented storage system is a distributed storage systems with a storage device directly connected to the network. In existing encryption schemes the protection of the sensitive data is achieved mainly through an encrypted data storage system, but the encryption key is protected only by a weak password. This is a security risk to storage system, so the key protection is an important issue that...
I/O performance for very large-scale storage systems has become more and more important as the need for storage has grown dramatically. Replication is one of the most important approaches to improve the I/O performance of massive distributed storage system. The storage node to which the Read/Write request is directed is the critical issue when multiple replicas exist in some different storage nodes...
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