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pNFS Introduction

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Schubert Zhang
Schubert Zhang

Parallel NFS (pNFS) is a standard defined in NFSv4.1 that separates file metadata and data to allow parallel and distributed access to file data. It defines protocols for clients to communicate with a metadata server to get file layouts describing the data locations and protocols to access multiple data servers directly in parallel. However, it does not define protocols between metadata and data servers, allowing flexibility in implementation. pNFS supports various storage layout types including file, block, and object storage and can provide high performance parallel I/O while maintaining NFS semantics.

Technology
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Parallel NFS - pNFS Parallel, Shared File System NFS v4.1, Standard Schubert Zhang Jun, 2008
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What pNFS is ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Design Principles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Architecture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
pNFS vs. NFS
How NFS works ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
How pNFS works ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Protocols & Interfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Storage Layout Types (File, Object, Block) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
File Operations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
File Operations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Client/Server Implementation ,[object Object]
Other Consideration ,[object Object],[object Object],[object Object],[object Object],[object Object]
Organizations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Examples - Solaris pNFS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]

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pNFS Introduction

  • 1. Parallel NFS - pNFS Parallel, Shared File System NFS v4.1, Standard Schubert Zhang Jun, 2008
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