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Title: Software/Operating Systems/File Systems - DFS Distributed File System
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Distributed File Systems Part I

Distributed File Systems Part I

11/30/98

Click here to start

Table of Contents Distributed File Systems Part I Issues in Centralized File Systems B*-Tree Files Issues in Centralized File Systems Directories Directories Directories Issues in Centralized File Systems Contiguous Allocation of File to Disk Blocks Linked Allocation of File to Disk Blocks Indexed Allocation of File to Disk Blocks UNIX I-node UNIX Directories I-node Allocation of File to Disk Blocks I-node Allocation of File to Disk Blocks Security in Centralized Systems What Is Security? Storing Protection Data Access Control Lists and Capabilities UNIX Protection Model Protection Bits for Files Authentication Methods Passwords Users, User IDs and the Superuser Groups and Group Identifiers Groups and Group Identifiers The Superuser Distributed File Systems Distributed File Systems Distributed File Systems: directory service interface Distributed File Systems: directory service interface Distributed File Systems: naming Distributed File Systems: two-level naming Semantics of File Sharing Semantics of File Sharing Semantics of File Sharing Issues in Distributed File Systems Semantics of File Sharing Semantics of File Sharing Semantics of File Sharing Semantics of File Sharing Semantics of File Sharing Distributed File Systems Part II Distributed File System Implementation Distributed File System Implementation: File Usage Patterns Distributed File System Implementation: File Usage Patterns File Usage Patterns on the Web File Usage Patterns on the Web Distributed File System Implementation: System Structure Distributed File System Implementation: System Structure Distributed File System Implementation: Name Lookup Distributed File System Implementation: Name Lookup Distributed File System Implementation: Name Lookup Distributed File System Implementation: State Info Distributed File System Implementation: State Info Distributed File System Implementation: State Info Distributed File System Implementation: Caching Distributed File System Implementation: Caching Cache Performance Cache Performance Cache Performance Cache Performance Cache Performance Client Cache Location Issues Client Cache Location Issues Client Cache Location Issues Cache Consistency Cache Consistency Cache Consistency Cache Consistency Distributed File Systems Part III Distributed File System Implementation: File Replication Distributed File System Implementation: Update Protocols Update Protocols: Primary Copy Update Protocols: Primary Copy Update Protocols: Voting (simple majority) Update Protocols: Voting (simple majority) Update Protocols: Voting (simple majority) Update Protocols: Voting (simple majority) Update Protocols: Voting (simple majority) Update Protocols: Quorum based voting Update Protocols: Quorum based voting Update Protocols: Quorum based voting Update Protocols: Quorum based voting Update Protocols: voting with ghosts PPT Slide Update Protocols: voting with ghosts Distributed File System Implementation: NFS NFS Architecture NFS Protocols NFS Protocols NFS: Sun's Implementation NFS: SUN’s Implementation NFS: SUN’s Implementation NFS: SUN’s Implementation Lessons Learned in Distributed File Systems Design Distributed File Systems Part IV Hierarchical Mass Storage Systems On-line data requirements On-line data requirements On-line data requirements On-line data requirements NASA’s Center for Computational Science Total Terabytes Stored NASA’s Center for Computational Science Workload Intensity Hierarchical Mass Storage Systems Hierarchical Mass Storage Systems Mass Storage Systems: Disk Cache Mass Storage Systems: Cache Miss Mass Storage Systems: Migration between levels Mass Storage System Architectures Host-attached MSSs Host Attached Device Based Mass Storage System Network-attached MSSs Transfer Protocols: Device to Device Transfer Network-attached MSSs PPT Slide Robotic Tape Library Examples of Devices for MSSs Examples of Devices for MSSs File Systems for MSSs Mass Storage System Example: “Unitree Central File Manager” Unitree I/O Architecture Unitree Diagram Workload Characterization Host-attached MSSs Queuing Network Model Workload Intensity Increase Results Client and Server Compression File Abstraction Network-attached MSSs Queuing Network Model HA Based vs. NA Based MSSs Scalability PPT Slide PPT Slide PPT Slide Author: Daniel A. Menasce' Email: menasce@cne.gmu.edu Home Page: http://www.cs.gmu.edu/~menasce/osbook/index.html
 

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