Secure Cooperative Regenerating Codes for Distributed Storage

[email protected]). A. S. Rawat and S. Vishwanath are with the Department of Electrical and Computer Engineering, The University of Texas at Aust...

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May 12, 2014 - We show that the proposed construction has good security properties and requires small finite field size. I. INTRODUCTION. Distributed storage systems (DSS) have recently received significant research attention due to their important a

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Jul 19, 2013 - We call CAD(d, k, r) the admissible region. If the parameters d, k and r are clear from the context, we will simply write CAD. We let γ∗(˜α) := min{x : (x, ˜α) ∈ CAD(d, k, r)}. (1). The value .... CAD(d, k, r) and not Pareto-d

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Aug 5, 2016 - vector ea are equal to zero and the a-th coordinate has its entry equal to 1. Let c = (c1,c2,...,cn) ∈C⊆ Bnα denote a codeword of the MSR code ...

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Feb 14, 2016 - DSS consisting of n nodes, each with a storage capacity of α, using an [n, k, d]-(α) (or, in short, [n, k, ..... (where bi ∈ {k + 1,..., n} denote the t parity nodes in the helper set), it is necessary and sufficient to find d ...

Oct 12, 2009 - tradeoff because k pieces, each of size M/k, provide the minimum data for recovering the file, which is of size. M. ... nodes, reconstruct the original file, and compute the needed new coded piece. .... To reduce the total number of co

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Aug 17, 2016 - Suppose there is an MSCR-coding-based DSS specified by {n, k, d, t = 2,B} and the repair downloads of node 1 is observed by the ..... can totally obtain (d = α)-sized repair data from the jth parity node to the first node that are. {.

Aug 6, 2013 - regenerate the data on the failed node. This metric is highly relevant as a large fraction of network bandwidth in DSS can be occupied by the data being transferred during the repair process. Thus, it is desirable to have coding schemes

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Feb 2, 2012 - The data is then processed and α bits are stored. The amounts of data exchanged and stored during repairs are summarized on. Figure 2. These studies lead to the definition of the optimal tradeoffs between storage α and repair costs γ

RAID 4 consists of block-level striping with a dedicated parity disk, whereas RAID 5 with distributed parity. [13]. Unlike in RAID 4, ... II. Background and Related Work. A. MSR codes and MBR codes. In a DSS, a message file of M symbols over. ( ). GF

Jul 4, 2012 - ative regenerating codes at the MBCR (minimum bandwidth cooperative regeneration) point. Before the paper, the only known explicit MBCR code is given with parameters n = d+r and d = k, while our construction applies to all possible valu

Keywords: distributed storage system, local codes with cooperative repair, ... Unlike in RAID 4, RAID 5's parity information is distributed among the drives, which ...