Coda Distributed File System

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Coda Distributed File System
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Introduction to File Systems

• Definition of File System
• Provides operations for storage, access,
  retrieval, manipulation and tracking of data
• Network File System
• Distributed File System
• Coda A research project

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Features of Coda

• High Availability
• Scalability
• Performance and efficiency
• Server replication
• Security model for authentication, encryption and
  access control

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Coda Architecture

• Based on AFS architecture
• Comprised of Vice and Virtue nodes

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Coda Architecture

• Virtue hosts user-level process called Venus
• Venus communicates with Vice file servers
• Vice file servers maintain files and provide
  authentication feature
• Coda provides globally shared namespace

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Implementation of Coda features

• Disconnected operation
• Client side caching
• Provides repair tools to resolve conflicts

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Companies using Coda

• Microsoft
• Hewlett-Packard
• ZOTECA