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NetVault Plug-in for SnapVault Manager 11.4.5 - User Guide

Configuring the secondary filer

To perform ASIS deduplication, the filer must have the correct version of NetApp installed. The ASIS license must be installed, and SIS must be enabled on the required volumes.

To determine if the correct version of NetApp Software is installed, type the following command:

The returned version of Data ONTAP should be 7.2.4 or higher. If not then the filer's software must be upgraded.

To determine if ASIS is licensed on the filer, type:

For example, the following output is from a filer that does not have ASIS license installed.

After obtaining the ASIS license from NetApp, type the following command to install the license:

license add <asis key>

To verify, type:

The following output is displayed when the license is correctly installed.

To perform ASIS deduplication, you must also install the NearStore license. To install this license, type:

license add <NearStore key>

To perform ASIS deduplication, ASIS must be enabled on each volume where deduplication of Secondary Snapshots is required. To determine which volumes have ASIS enabled, type

Example

To enable ASIS on a given volume, type:

sis on <volume_path>

Example

Configuring the plug-in

To perform ASIS deduplication of Secondary Snapshots, the Plug‑in for SnapVault Manager must be configured to instruct the Secondary Filer to create a deduplicated snapshot. This configuration is done by setting the Enable A-SIS Deduplication of Secondary Snapshots check box in the Configure window. For more information about this option, see Configuring default settings.

If the Enable A-SIS Deduplication of Secondary Snapshots check box is selected, deduplication of the Secondary Snapshot occurs, but only if the filer has the ASIS license installed and the target volume has ASIS enabled. Initially the filer creates an archive snapshot, ASIS deduplication of this snapshot is performed. After it is successfully completed, the archive snapshot is replaced with the deduplicated snapshot. If the target filer is not licensed for ASIS or the target volume does not have ASIS enabled, deduplication does not occur.

If the Enable A-SIS Deduplication of Secondary Snapshots check box is not selected, deduplication of the secondary snapshot does not occur, even if the filer has the ASIS license installed and the target volume has ASIS enabled.

Versions of the Plug‑in for SnapVault Manager earlier than version 2.1 do not generate ASIS deduplicated snapshots even if the filer is licensed for ASIS and the target volume has ASIS enabled.

Restoring data

Prerequisites

When restoring to the location of the original backup or a location where a backup has been previously restored, the following command to release the relationship manually from the Primary:

snapvault release <primary_path> <secondary_filer>:<secondary_path>

Example

This procedure is applicable to all types of Primary because they do not allow restores to an existing qtree (or backed up directory). This prerequisite protects against overwriting of data and allows the restore/resync/restart functionality.

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