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Questions and Answers
What is the primary function of a Distributed File System (DFS)?
What is the primary function of a Distributed File System (DFS)?
Which protocol allows computers to access files over a network similarly to local disk access?
Which protocol allows computers to access files over a network similarly to local disk access?
What is a key characteristic of the Network File System (NFS)?
What is a key characteristic of the Network File System (NFS)?
In the context of Unix File System (UFS), what does an inode represent?
In the context of Unix File System (UFS), what does an inode represent?
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What role does the superblock play in Unix File System (UFS)?
What role does the superblock play in Unix File System (UFS)?
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What is the first step in developing a Distributed File System (DFS) with NFS and UFS integration?
What is the first step in developing a Distributed File System (DFS) with NFS and UFS integration?
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In the integration of NFS in a DFS, what is the main function of NFS?
In the integration of NFS in a DFS, what is the main function of NFS?
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What does file replication in a Distributed File System (DFS) provide?
What does file replication in a Distributed File System (DFS) provide?
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What role does NFS play in the distributed file system setup?
What role does NFS play in the distributed file system setup?
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Which statement correctly describes the function of DFS in this system?
Which statement correctly describes the function of DFS in this system?
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What type of storage does each server use to manage files locally?
What type of storage does each server use to manage files locally?
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Why is the use of DFS beneficial for a distributed file system?
Why is the use of DFS beneficial for a distributed file system?
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In this system, how do clients access files stored on different servers?
In this system, how do clients access files stored on different servers?
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What is a key feature of NFS in relation to server files?
What is a key feature of NFS in relation to server files?
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What is the main purpose of employing UFS within each server?
What is the main purpose of employing UFS within each server?
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Which of the following statements best captures the relationship between NFS, DFS, and UFS?
Which of the following statements best captures the relationship between NFS, DFS, and UFS?
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Study Notes
Distributed File System (DFS)
- DFS allows multiple clients to access files on a network, even if files are on different servers.
- Presents a single view of files, regardless of physical location.
- Offers transparency, replication, fault tolerance, and scalability.
Network File System (NFS)
- NFS is a protocol for accessing files over a network.
- Developed by Sun Microsystems.
- Widely used on Unix and Linux systems.
- Uses server-client model.
- Clients request file operations, servers process the requests.
- Stateless protocol: each request contains all the information the server needs.
Unix File System (UFS)
- Traditional file system for Unix operating systems.
- Organizes and manages data on disk.
- Handles file storage and retrieval.
- Uses inodes, directories, and superblocks to manage files.
DFS Development with NFS and UFS Integration
- DFS architecture: Interconnected servers, distributed file storage with replication and failover.
- NFS integration: Clients use NFS to access files, NFS interacts with DFS to locate and retrieve files from servers.
- UFS storage: Each server uses UFS to store its files locally, UFS handles file organization on individual servers.
Workflow
- NFS clients request files.
- DFS locates and retrieves files from the appropriate server.
- Each server's UFS manages local file storage.
Summary
- NFS enables clients to view files as local, even if they are distributed.
- UFS manages file storage locally on each server.
- DFS provides distributed file management, fault tolerance, and replication across servers.
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Description
Explore the concepts and functionalities of Distributed File Systems (DFS), Network File System (NFS), and Unix File System (UFS). Understand how these systems provide file access and management across networks, ensuring scalability, transparency, and fault tolerance. Dive into the architectural aspects of combining these file systems for enhanced performance.