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File Systems and File ManagementJump straight to an abstract:
The Abstracts
The File Systems Evolution
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, WAFS, 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 files 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
Scale-Out Storage Systems
This is a overview of scale-out storage systems and their underlying file system technologies - primarily focused on network-attached storage systems. In this presentation, scale-out will be defined in contrast with scale-up storage systems, the market, user, and technology needs driving new class of storage systems will be explained, as well as a survey of open-source and commercial implementations available today.
File Systems for Object Storage Devices
Object-based storage devices (OSDs) may well be the “next big thing” in file-oriented data storage. Already popular in the high-performance computing arena, they are poised to enter more more general enterprise computing environments. By distributing storage management and enabling secure data transfer between storage devices and clients, OSDs promise significant improvements in scaling and administrative simplicity. But making effective use of OSDs requires a new breed of file system—one that makes use of the new devices effectively to deliver the promised benefits. This tutorial will describe the salient properties of OSDs, explain how file system technology is evolving to exploit the scalability and administrative simplicity they offer, identify the mature and emerging segments of the OSD-based file storage market, and show how technology that has been successful in HPC can be beneficially employed in the general data center environment. Standardization activities, notably the parallel NFS (pNFS) protocol for addressing OSDs will be discussed.
Storage Tiering and the Impact of Flash on File Systems
With all of the talk about how storage systems will be impacted by large amounts of relatively inexpensive Flash little has been said about how file systems will need to change to take advantage of it. This tutorial will cover how file systems are evolving tiered architectures to leverage Flash.
File Systems
Deduplication can be accomplished in different ways in a file system. This tutorial will focus on block-level deduplication. While conceptually simple, an implementation can be quite complex as it must address multiple issues: scalability - when the lookup table no longer fits in memory. performance - impact of table lookups and writes dependent on reads. space accounting - space now be shared between files and file systems. administrative model - keeping model simple. We will talk about these issues in detail. This tutorial will also cover expanding the notion of deduplication beyond the storage device to include in-memory and over-the-wire deduplication.
• Handling scalability in deduplication. |
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