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Dell PowerScale OneFS: Writable Snapshots
Executive summary Overview
Introduction
Architecture
Writable snapshots prerequisite Configuring and managing writable snapshots Monitoring and reporting Writable snapshots and OneFS domains Nested writable snapshots Symbolic and hard links with writable snapshots Licensing requirements Writable snapshots performance Writable snapshots and OneFS data services Writable snapshots and data replication Writable snapshots workflows Best practices and considerations Conclusion Technical support and resources

Introduction

Home > Storage > PowerScale (Isilon) > Product Documentation > Data Protection > Dell PowerScale OneFS: Writable Snapshots > Introduction

Introduction

  • Writable snapshots are a data storage technique for generating temporary copies of a ‘golden’ dataset, while eliminating unnecessary duplication of data and the resulting capacity overhead.

    Traditional methods of copying entire directory trees are often costly, both in terms of storage consumption and administrative overhead. They often rely on creating writable copies of a directory tree through:

    • A simple recursive copy, which is expensive in terms of time and storage.
    • Recursively cloning a directory, which is typically a lengthy serial operation.
    • Replication (either locally or to a remote target), which is both capacity and time consuming.

    Dell PowerScale writable snapshots, available in OneFS 9.3 and later, gives you the ability to create fast, simple, efficient copies of datasets. It enables a writable view of a regular snapshot that is presented at a target directory and is accessible by clients across the full range of supported NAS protocols.