Data ONTAP creates online data backups to enable online data recovery. Online backup refers to backup data that is stored on disks rather than on tape.
Data stored on disk is thus available for quick restoring in the event that disaster recovery operations are necessary.
Online backup and recovery solutions include: Snapshot, SnapMirror, SnapRestore, SnapVault, SyncMirror, and the vol copy command.
- The Snapshot feature enables you to schedule weekly, daily, or hourly online backups. Snapshot technology makes online point-in-time copies in the same volume as the original data. It enables users to recover their own deleted or modified files without assistance from a system administrator.
- The SnapMirror feature allows you to schedule regular automatic copies of file system Snapshot copies
of a volume or qtree onto another volume or qtree (on the same or a different storage system).
- The SnapRestore
feature restores an entire volume to the state recorded in a previously created Snapshot copy with maximum speed and disk space efficiency. The SnapVault feature protects the data in one or more qtrees in a series of Snapshot copies stored on a separate storage system.
- SnapVault maintains an online, asynchronous, permanently read-only replica of the qtree data. SnapVault backup and Snapshot copy creation runs on an automated schedule.
Note: SnapVault, in addition to providing
storage system
backup, also provides direct backup to servers running Windows NT, Windows 2000, Solaris, or HP-UX.
- SyncMirror provides continuous real-time mirroring of data between two partner volumes on a shared or partner storage system.
- The MetroCluster feature provides SyncMirror continuous mirroring over extended distances (500 meters to 100 kilometers).
- The vol copy command takes Snapshot copies and copy file systems to separate volumes or storage systems manually or by means of a script.
- The ndmpcopy command copies any subtree to any location on any storage system. For more information, see the Data ONTAP Data Protection Tape Backup and Recovery Guide.
You can use these online data backup and recovery systems to supplement tape backup and recovery.
