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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

Distributed File Systems

Chaitanya Sambhara

CSC 8320

Advanced Operating Systems

characteristics
Characteristics
  • A DFS is a network file system.
  • It supports sharing of files.
  • A single file system can be distributed across several physical nodes.
slide3
Used for replication of data.
  • Used for fault tolerance
hardware characteristics of dfs
Hardware Characteristics of DFS
  • RAID Technology.
  • RAID stands for Redundant Array of Independent Disks.
  • Different levels of RAID
uses of distributed file systems
Uses of Distributed File Systems
  • Data sharing among multiple users
  • User mobility
  • Location transparency
  • Backups and centralized management
transaction processing
Transaction Processing
  • ACID Properties.
  • Concurrency Control.
  • Deadlocks.
  • Locking Techniques
2 phase commit protocol
2 Phase Commit Protocol
  • Phase 1:Request a lock.
  • Phase 2: Release the lock.
system tuning
System Tuning
  • Go to explain plain.
  • Expense of a query.
  • Analysis
  • Indexing
indexing
Indexing

 Indexing Technique.

Insertion and Extraction of Data.

data replication
Data Replication
  • Multiple Instances
  • What is an instance?
  • More than one data systems.
data systems
Data Systems
  • Development
  • Testing
  • Production
references
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