Comprehensive Backup and Recovery for ZFS filesystems

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Amanda 2.6.1 release provides Application API and flexibility to configure multiple backup methods for a filesystem or an application. One of the examples of the application API flexibility is backup of ZFS filesystems on OpenSolaris. Amanda performs backups using platform tools to archive a filesystem. In case of ZFS multiple such tools are available to extract data for backup purposes.
Amanda 2.6.1 supports four different methods to backup ZFS filesystem/directories. Each method has pros and cons. They are summarized in the table below:ZFS backup methods
In addition to providing four different backup methods, ZFS snapshot pre-backup plugin is available (regardless of which method the administrator chooses for backup) to backup open files. It provides crash consistent backup of the filesystem/directory. Amanda allows OpenSolaris administrator to configure appropriate backup method for each DLE (disk list entry), which is a unit of Amanda backup configuration.

This work illustrates how availability of open APIs such as Amanda’s Application API fosters development and testing contributions from the Amanda community.

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