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Distributed File Systems

Distributed File Systems . Chaitanya Sambhara CSC 8320 Advanced Operating Systems. Characteristics. A DFS is a network file system. It supports sharing of files. A single file system can be distributed across several physical nodes. Used for replication of data. Used for fault tolerance.

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Distributed File Systems

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  1. Distributed File Systems Chaitanya Sambhara CSC 8320 Advanced Operating Systems

  2. Characteristics • A DFS is a network file system. • It supports sharing of files. • A single file system can be distributed across several physical nodes.

  3. Used for replication of data. • Used for fault tolerance

  4. Hardware Characteristics of DFS • RAID Technology. • RAID stands for Redundant Array of Independent Disks. • Different levels of RAID

  5. Uses of Distributed File Systems • Data sharing among multiple users • User mobility • Location transparency • Backups and centralized management

  6. Transaction Processing • ACID Properties. • Concurrency Control. • Deadlocks. • Locking Techniques

  7. 2 Phase Commit Protocol • Phase 1:Request a lock. • Phase 2: Release the lock.

  8. System Tuning • Go to explain plain. • Expense of a query. • Analysis • Indexing

  9. Indexing  Indexing Technique. Insertion and Extraction of Data.

  10. Data Replication • Multiple Instances • What is an instance? • More than one data systems.

  11. Data Systems • Development • Testing • Production

  12. References • Implementing message passing communication with a shared memory communication mechanism (1999)  • On the abstraction of message-passing communications using algorithmic skeletons : A case study (2005) • The State of the Art in Agent Communication Languages (2000) • A survey of anycast in IPv6 networks Weber, S.   Liang Cheng Lehigh Univ., Bethlehem, PA, USA; (2004) • Transaction-Based Communication-Centric Debug The Netherlands; Technical University Delft (2007) • NDR: Name Directory Service in Mobile Ad-Hoc Network Jae-Hoon Jeong, Jung-Soo Park, Hyoung-Jun Kim (2005) • A Distributed Mutual Exclusion Algorithm for Mobile Ad-Hoc Networks Università di Roma "La Sapienza (2004) • Local Leader Election in Wireless Sensor Networks ww.cs.rpi.edu/~szymansk/papers/wman.05.pdf (2005) • www.wikipedia.com

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