Data ONTAP creates online data backups to enable online data recovery. Online backup data is stored on disks, or on array LUNs in the case of third-party storage, rather than on tape. Data stored on disk is available for quick restoring in the event that disaster recovery operations are necessary.
Online backup and recovery solutions include: Snapshot, SnapMirror, SnapRestore, SnapVault, SyncMirror, MetroCluster, the vol copy command, and the ndmpcopy 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 uses a Snapshot copy and copies a volume, 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 for 7-Mode.
You can use these online data backup and recovery systems to supplement tape backup and recovery.