Table of ContentsView in Frames

Tools for protecting against data-loss disasters

Data ONTAP provides tools that enable you to back up or replicate data stored at a primary data storage site to an off-site network location. This ensures that you can restore data if data loss is caused by disaster at a primary data storage site.

SnapVault

SnapVault is an inter-site Snapshot copy backup and restorability tool on FlexVol volumes. You can locate a SnapVault destination off-site, at any distance from the source system.

Data recoverability
If a data-loss disaster occurs at a source storage site, you can restore data that is backed up to a SnapVault destination storage site. You can restore the data to the source storage system after it is running again, or you can restore data to a system at an alternate location.
Currency of restore data
You can restore data from the last Snapshot copy that was replicated to the destination system.
Connection requirements
DSL or faster connections are recommended between the source and destination systems. Even connections with very low bandwidth, such as 56 Kbps, are possible.
You should preconfigure routers, switches, and DNS servers to direct users to alternate storage sites if the source system that they first attempt to access is unavailable.
Advantage
SnapVault provides centralized, inexpensive off-site backup.

SnapMirror

SnapMirror is an inter-site Snapshot copy backup, availability, and restorability tool. You can locate a SnapMirror destination off-site, at any distance from the source system.

Data availability
If a source site experiences a data-loss disaster, you can quickly make available data at the SnapMirror destination site.
Data recoverability
If a data-loss disaster occurs at a source storage site, you can restore data that is backed up to a SnapMirror destination storage site. You can restore the data to the source storage system after it is running again, or you can restore data to a system at an alternate location.
Currency of restore data
You can restore data from the last Snapshot copy that was replicated to the destination volume.
Connection requirements
DSL or faster connections are recommended between the source and destination systems. Even connections with very low bandwidth, such as 56 Kbps, are possible.
You should preconfigure routers, switches, and DNS servers to direct users to alternate storage sites if the source system that they first attempt to access is unavailable.
Advantage
SnapMirror provides off-site protection and availability.

MetroCluster configurations for FlexVol volumes

MetroCluster configurations provide inter-site, real-time backup, availability, and restorability. You can locate synchronously mirrored MetroCluster systems at different sites, up to 100 km from one another.

Data availability
If a storage site experiences a data-loss disaster, you can quickly make available data that is mirrored to the partner site.
Data recoverability
You can restore data from a mirrored partner site to the source storage system after it is running again, or you can restore data to a system at an alternate location.
Currency of restore data
You can restore data from the time of the last NVRAM checkpoint.
Connection requirements
Data ONTAP cluster connections supplemented with switches and DSL or faster connections are required.
You should preconfigure routers, switches, and DNS servers to direct users to the MetroCluster partner if the clustered system that they first attempt to access is unavailable.
For more information about MetroCluster configurations, see the Data ONTAP High Availability and MetroCluster Configuration Guide for 7-Mode.
Advantage
MetroCluster configurations provide real-time, off-site protection and availability.