NetApp
Data Protection : SnapVault : Understanding SnapVault relationships : What SnapVault is
What SnapVault is
SnapVault is a disk-based storage backup feature of Data ONTAP. SnapVault enables data stored on multiple systems to be backed up to a central, secondary system quickly and efficiently as read-only Snapshot copies.
In the event of data loss or corruption on a system, backed-up data can be restored from the SnapVault secondary system with less downtime and uncertainty than is associated with conventional tape backup and restore operations.
The following terms are used to describe the SnapVault feature:
•
Primary system—a system whose data is to be backed up
•
Secondary system—a system to which data is backed up
•
Primary system qtree—a qtree on a primary system whose data is backed up to a secondary qtree on a secondary system
•
Secondary system qtree—a qtree on a secondary system to which data from a primary qtree on a primary system is backed up
•
SnapVault relationship—the backup relationship between a qtree on a primary system and its corresponding secondary system qtree
•
SnapVault Snapshot copy—the backup images that SnapVault creates at intervals on its primary and secondary systems
SnapVault Snapshot copies capture the state of primary qtree data on each primary system. This data is transferred to secondary qtrees on the SnapVault secondary system. The secondary system creates and maintains versions of Snapshot copies of the combined data for long-term storage and possible restore operations.
•
SnapVault Snapshot basename—a name that you assign to a set of SnapVault Snapshot copies. As incremental Snapshot copies for a set are taken and stored on both the primary and secondary systems, the system appends a number (0, 1, 2, 3, and so on) to the basenames to track the most recent and earlier Snapshot updates.
•
SnapVault baseline transfer—an initial complete backup of a primary storage qtree to a corresponding qtree on the secondary system
•
SnapVault incremental transfer—a follow-up backup to the secondary system that contains only the changes to the primary storage data between the current and last transfer actions

Was this topic helpful? Send comments to NetApp.