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Compound Codes for Optimal Repair in Distributed Storage

Compound Codes for Optimal Repair in Distributed Storage. Viveck R. Cadambe. Data Centers. Servers (RAID-type systems). Peer-to-Peer Storage. Distributed Storage. Data Centers. Servers (RAID-type systems). Peer-to-Peer Storage. Redundancy for a fixed amount storage

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Compound Codes for Optimal Repair in Distributed Storage

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  1. Compound Codes for Optimal Repair in Distributed Storage Viveck R. Cadambe

  2. Data Centers Servers (RAID-type systems) Peer-to-Peer Storage

  3. Distributed Storage Data Centers Servers (RAID-type systems) Peer-to-Peer Storage

  4. Redundancyfor a fixed amount storage • Maximum Distance Separable Codes (MDS Codes); For example,Reed-Solomon Codes • Complexity (Encoding and Update) • EVENODD, STAR, RDP, Liberation, X Codes etc. • (Recent) Repair Efficiency • Network bandwidth • Disk access

  5. Redundancyfor a fixed amount storage • Maximum Distance Separable Codes (MDS Codes); For example,Reed-Solomon Codes • Complexity (Encoding and Update) • EVENODD, STAR, RDP, Liberation, X Codes etc. • (Recent) Repair Efficiency • Network bandwidth • Disk access

  6. Redundancyfor a fixed amount storage • Maximum Distance Separable Codes (MDS Codes); For example,Reed-Solomon Codes • Complexity (Encoding and Update) • EVENODD, STAR, RDP, Liberation, X Codes etc. • (Recent) Repair Efficiency • Network bandwidth • Disk access

  7. Redundancyfor a fixed amount storage • Maximum Distance Separable Codes (MDS Codes); For example, Reed Solomon Codes • Complexity(Encoding and Update) • EVENODD, STAR, RDP, Liberation, X Codes etc. • (Recent) Repair Efficiency • Network bandwidth • Disk access

  8. Practical reasons (Reliability, Network Bandwidth usage) *non-multicast -> Destinations do not intend to decode all the sources in the network.

  9. Practical reasons (Reliability, Network Bandwidth usage) • Multi-Source (non-multicast*) Network Capacity Problem • Interference Alignment *non-multicast -> Destinations do not intend to decode all the sources in the network.

  10. [Wu-Dimakis 09] Trivial Repair : 4 linear combinations

  11. [Wu-Dimakis 09] Interference Alignment!

  12. Interference Alignment!

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