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GRID COMPUTING: REPLICATION CONCEPTS

Learn about replication in grid computing, including file level and object level replication, creation of replica, selection and deletion criteria, and the benefits of grid computing. Explore the potential of grid computing as the next generation internet.

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GRID COMPUTING: REPLICATION CONCEPTS

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  1. GRID COMPUTING: REPLICATION CONCEPTS Presented By: Payal Patel

  2. Outline • What is Grid computing? • Replication in grid computing • Creation of replica in Grid computing • File level replication • Object level replication • Selection of replica • Deletion of replica • Conclusion

  3. What is Grid Computing? • Aim : share and distribute data, storage and other resources.[1] • It provides: • global sharing of distributed resources • non-trivial qualities of service.[2] • businesses can optimize computing and data resources.[2] • reliable and transparent access

  4. Grid computing (cont.) • Component of Grid computing.[2] • Security • Data Management • Resource Management • Information Services

  5. Grid Computing (cont.) • Figure from [1]

  6. Replication in grid computing • Replication means copies of data in different locations. • Goal :To provide user to access data anywhere if any failure occurs. • Improves data access performance. • Grid computing uses Dynamic replication

  7. Creation of replica • Goal: To achieve • high data availability • Fault tolerance • Creation of replica depends on granularities of levels.[5] • File Level • Object level

  8. File Level Replica Creation Grid Data Management pilot (GDMP) • Used as file replication software system • It has three components: [1] • Replica catalog service Three levels of catalog: • Collection • location • Logical file entry • Data mover services • The storage manager service

  9. Conti. • Figure from [1]

  10. Object Level Replication • Used when file level replication uses large amount of bandwidth and disk space. Figure from [1]

  11. Selection Of Replica Selection criteria:[1] • Discovering physical location of a file given a logical file name. • Replica Location Service (RLS) • Selecting the best replica from a set of physical replica location.

  12. Deletion of Replica • Maintain efficient resource utilization • Free up unused storage. • Uses decentralized replica deletion algorithm • Replica deletion agent (RDA) to delete replica.[1]

  13. Conclusion • Grid computing provides large scale resource sharing and high performance orientation. • File level and object level are two types of replica creation • I also discussed selection and deletion criteria of replica • Latest ongoing research in grid computing: “Grid: The next generation internet”

  14. References • Fay Hui, Cheryl Kang and Ichitaro Yamazaki. Distributed Data Replication in Grid Computing. • IBM grid computing website at http://www-1.ibm.com/grid/ • Globus project. http://www.globus.org • Grid 2004: from rocket science to business service

  15. Thank you

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