Clustered Data ONTAP 8.3 & SnapMirror and SnapVault

As a follow-on to my previous blog on clustered Data ONTAP 8.3 and MetroCluster, SnapMirror (data replication software) and SnapVault (backup and recovery software) are two industry leading features that have been enhanced with clustered Data ONTAP version 8.3 and are key enabling technology for the hybrid cloud.

An overview of the enhancements:

  • Single replication stream for SnapMirror and SnapVault which provides the benefits of reducing network traffic by 50% and reducing secondary storage requirements by 40%.
  • Native network compression which can reduce bandwidth requirements by up to 70%, and can eliminate the need for separate WAN optimization hardware.
  • Failover to a prior point-in-time Snapshot copy in the event of mirrored corruption. SnapMirror can help you recover quickly to a previous point in time by leveraging the vaulted Snapshot copies in the unified mirror/vault repository. snapmirror.pngBecause the SnapMirror destination can retain additional Snapshot copies, you no longer need to maintain separate Snapshot copies for disaster recovery and backup at the secondary site.
  • Starting with version 8.3, SnapMirror version-flexible replication allows different versions of SnapMirror at the primary and secondary locations that can be upgraded nondisruptively. In the past you needed to have the same version of clustered Data ONTAP at both the primary and secondary sites, but many customers have hundreds of SnapMirror relationships around the world and needed a way to upgrade SnapMirror at their own pace. This not only simplifies the upgrade process, it also supports bidirectional replication. In the past, bidirectional systems each had to be running on identical software revision levels.fas
  • With SnapVault, fast granular restores can happen at the LUN/File level in addition to the volume level.

Additional enhancements include the ability to cache SnapMirror and SnapVault destination volumes in Flash Pool, the ability to replicate a specific FlexClone volume, and increased Fan-in (255:1) and Fan-out (1:16).

Mike McNamara