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P2N: Cloud Control
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  1. P2N: Cloud Control David Tarrant davetaz@ecs.soton.ac.uk Ben O’Steen benjamin.osteen@ouls.ox.ac.uk

  2. Problem • Everyone loves the cloud • No one in this room would use it as their primary storage. • Would anyone use it as a long term preservation storage solution?

  3. More Questions • Does the cloud do backup/replication/multi-site replication? • Where are my files stored (geographically)? • What is the long term pricing strategy of the cloud?

  4. Influences • Simplistic Cloud API • High resilience and distribution of resources • Transparent Expansion • Low Barrier to Entry

  5. The API • Amazon S3 • PUT, GET, POST, HEAD, DELETE • HTTP has all the tools we need!

  6. High Resilience & Distribution • Erasing coding (Honeycomb & RAID) • More efficient than replication • Resilience of Bit Torrent • Nodes in the network are geographic aware

  7. Transparent Expansion • Nodes can be added to the network arbitrarily • Network re-distributes data for even spread

  8. Low Barrier to Entry • Provide a node • Full machine • Spare space on an existing machine

  9. The P2N N1 N2 N3 N4 N5 N6

  10. The P2N N N1 N2 N3 N4 N5 N6

  11. The P2N N N1 N2 N3 N4 N5 N6

  12. The P2N Single Point of Failure? N N N1 N2 N3 N4 N5 N6

  13. The P2N Single Point of Failure? N2 N1 N3 N4 N5 N6

  14. Institutional Distribution N4 N1 N5 N2 N6 N3

  15. Flexability • Object level granularity • Basic metadata support (through POST, HEAD) • Object reporting, available via HEAD (single object) or GET (network report) • Extensions to S3 API without breaking core functionality.

  16. Progress so far • Feasibility study has been done • Now re-modularising the core • P2N1 – Localised Network (Spare space) • P2N2 – Thumper Network (200Tb+)

  17. Thank-YouP2N: Cloud Control David Tarrant davetaz@ecs.soton.ac.uk Ben O’Steen benjamin.osteen@ouls.ox.ac.uk Preserv .org.uk Repository Preservation and Interoperability