Decentralized Storage Systems in Volunteer Computing Systems
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Course: Decentralized Systems Final Project: Make a survey on Large-Scale Decentralized Storage Systems to be used by Volunteer Computing Systems and present it in class (15-20min)
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Decentralized Storage Systems in Volunteer Computing Systems
- 1. DS – Decentralized Systems A Survey on Large-Scale Decentralized Storage Systems to be used by Volunteer Computing Systems Umit Cavus Buyuksahin ucbuyuksahin@gmail.com Maria Stylianou marsty5@gmail.com Nicos Demetriou nicosdem7@gmail.com Muhammad Adnan Khan malikadnan78@gmail.com
- 2. Outline ● Introduction ● Large-Scale Decentralized Storage Systems ● Volunteer Computing Systems ● Main Common Characteristics ● Most Suitable System ● Summary 2
- 3. Introduction Storage Systems Volunteer → Store data from Computing Systems computations of → Volunteers offer Distributed Systems unused storage & → Need for more resources storage! Researchers from SS turn to: → Unused storage → Volunteer Computing Systems 3 DS – Decentralized Systems
- 4. Main Common Characteristics ● Symmetry peers at the same level ● Scalability regarding # of nodes ● Anonymity keep identity secret ● Availability data reachable ● Robustness recovery after failures 4 DS – Decentralized Systems
- 5. Examined Decentralized Systems ● FreeHaven ● Riak ● FreeNet ● Dynamo Umit Adnan ● Ivy ● MongoDB ● Frangipani ● BigTable ● Ceph ● Pastis ● OceanStore ● Storage@home Nicos Maria ● Antiquity ● Farsite ● TFS ● TotalRecall 5 DS – Decentralized Systems
- 6. Symmetry Not Symmetric Systems Frangipani Antiquity Have an administrator BigTable Farsite OceanStore MongoDB Have different roles TotalRecall 6 DS – Decentralized Systems
- 7. Scalability Systems with Limited Scalability FreeHaven Limited Scalability Ivy by design Farsite Best System: Ceph 7 DS – Decentralized Systems
- 8. Anonymity Systems with Anonymity FreeHaven FreeNet Addressed as a main issue Storage@Home 8 DS – Decentralized Systems
- 9. Availability Systems with Medium Level Availability FreeHaven No replication mechanism FreeNet Best System: TotalRecall 9 DS – Decentralized Systems
- 10. Robustness All Systems are Robust FreeHaven → Buddy System Antiquity → Quorum Repair Pastis → Based on its Storage Layer FarSite → Handle Byzantine Faults The rest: → Fault Tolerance Service, Repair Mechanisms 10 DS – Decentralized Systems
- 11. Most Suitable System: Storage@home ● Typical volunteer computing model ● Participants ● Act as volunteers ● Install an agent on their machine ● Compete & Gain points based on contribution in storage & recruitment process ● DSS characteristics → Satisfied! ● VCS requirements → Satisfied! 11 DS – Decentralized Systems
- 12. Summary ● DSS & VCS have common characteristics – Symmetry – Scalability – Anonymity – Availability – Robustness ● Storage@home has everything! 12 DS – Decentralized Systems
- 13. DS – Decentralized Systems A Survey on Large-Scale Decentralized Storage Systems to be used by Volunteer Computing Systems Umit Cavus Buyuksahin ucbuyuksahin@gmail.com Maria Stylianou marsty5@gmail.com Nicos Demetriou nicosdem7@gmail.com Muhammad Adnan Khan malikadnan78@gmail.com