File Systems and File Management

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The Abstracts

The File Systems Evolution
Thomas Rivera
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File Systems impose structure on the address space of one or more physical or virtual devices. Starting with local file systems over time additional file systems appeared focusing on specialized requirements such as data sharing, remote file access, distributed file access, parallel files access, HPC, archiving, security etc.. Due to the dramatic growth of unstructured data files as the basic units for data containers are morphing into file objects providing more semantics and feature-rich capabilities for content processing. This presentation will categorize and explain the basic principles of currently available file systems (e.g. local FS, shared FS, SAN FS, clustered FS, network FS, distributed FS, parallel FS, object FS, ...). It will also explain technologies like NAS aggregation, NAS clustering, scalable NFS, global namespace, parallel NFS, storage grids and cloud storage. All of these file system categories are complementary. They will be enhanced in parallel with additional value added functionality. New file system architectures will be developed and some of them will be blended in the future.

Learning Objectives

Understand the basic principles of different files system architectures
Understand how file systems evolved over time
Being prepared to discuss, position and recommend the most appropriate file system for a customer solution

SMB Remote File Protocol (including SMB 3.0)
Jose Barreto
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The SMB protocol has evolved over time from CIFS to SMB1 to SMB2, with implementations by dozens of vendors including most major Operating Systems and NAS solutions. The SMB 3.0 protocol, announced at the SNIA SDC Conference in September 2011, is expected to have its first commercial implementations by Microsoft, NetApp and EMC by the end of 2012 (and potentially more later). This SNIA Tutorial describes the basic architecture of the SMB protocol and basic operations, including connecting to a share, negotiating a dialect, executing operations and disconnecting from a share. The second part of the talk will cover improvements in the version 2.0 of the protocol, including a reduced command set, support for asynchronous operations, compounding of operations, durable and resilient file handles, file leasing and large MTU support. The final part of the talk covers the latest changes in the SMB 3.0 version, including persistent handles (SMB Transparent Failover), active/active clusters (SMB Scale-Out), multiple connections per sessions (SMB Multichannel), support for RDMA protocols (SMB Direct), snapshot-based backups (VSS for Remote File Shares) opportunistic locking of folders (SMB Directory Leasing), and SMB encryption.

Learning Objectives