Configuring Active Sync

Wasabi Cloud NAS Active Sync allows you to synchronize the contents of two or more sources, each on a separate computer, through a common bucket. You must pair all sources with the same bucket and configure the Active Sync policy. The Active Sync mechanism operates using two parameters—the time interval at which a source sends notifications to other sources about changes to its content on the bucket, and the time interval at which a source checks for notifications from other sources about modified content (newly replicated data available, deleted content, etc.) on the bucket.

After a source receives a notification for updated content from other sources, WCN automatically creates a nearline file for each new file replicated from other sources. Nearline files are created on the source on demand, only upon receiving a request (by a user or application) for access to the directory, which should contain them, and each nearline file can then be retrieved manually or automatically if a user or application attempts to open it.

You can also set WCN to begin retrieving new nearline files immediately after it finishes the synchronization. This can be useful when you are synchronizing the contents of a NAS source, as data from other sources will otherwise appear as nearline files in the NAS source’s shadow copy folder.

Additionally, you can set WCN to keep a file’s security descriptor when it is being retrieved on other sources. It is advisable to enable this option only if all sources are in the same Active Directory domain.

To allow for proper synchronization of all contents, it is advisable to set up WCN operation mode parameters on all sources such that a file on the bucket is not deleted when it is retrieved on any of the sources. Also, it is advisable not to delete the file from the bucket if it is deleted on any of the sources. Otherwise, other sources may fail to retrieve the respective file (even if retrieve mode and delete mode are set to keep the replica). The ideal way would be to set delete mode to keep the replica on all the synchronized sources. For more information, refer to Configuring Operation Mode.

See also Synchronization Policy and Metadata.

Configuring the Active Sync Policy for a Specific Source

1. Select the source in the left pane.
2. Click the Add sync button.
3. In the Listen section, enter the time interval at which the computer should check for notifications from other computers about changes in the contents of their sources. Select the unit of measure in the drop-
   You can disable the Listen check box for a selected source, thus configuring this computer to only send notifications about changes to the contents at its source side, but not letting it synchronize its source contents with changes from other sources and vice versa.
4. Select the Automatically restore file on the synchronized source check box if you want WCNto begin retrieving the files immediately after the content is synchronized.

   

5. Click Apply.

To edit the Active Sync policy for this source, simply select it in the left pane, edit the desired parameter, and click Apply.

To delete the policy and let the source use the global Active Sync policy, select it in the left pane and then click the Delete sync button.

Setting to Preserve the Files Security Descriptor on All Sources

1. In the left pane, select Global Settings.
2. Select the Preserve security descriptor on sync check box to keep the security of all files on each source after content synchronization.

   Or, clear the Preserve security descriptor on sync check box to retrieve all files without security on each source after content synchronization.

   

3. Click Apply.

Synchronization Policy and Metadata

When a Synchronization policy is added to a bucket with compliance mode enabled, the WCN will automatically create a new bucket just for the synchronization metadata. This bucket will not be listed in the Configuration User Interface, but will be present on the account with a name in the format:

{actual_bucket}-wcn-sync

For example: