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KB ID: 5993

Product: TS5020 Series | TS71210 Series | TS3030 Series | TS Essentials Series 2025

Configuring Replication Between TeraStation 3-5-7 series units

Last Updated: 02/27/2026




For Replication best practices and restrictions please refer to the User Manual.
 

Configure a Shared folder on the target TeraStation

  1. Log in to Settings for the TeraStation. 
  2. From the "File Sharing" tab, click on the widget to the right of "Folder Setup".

  1. A list of currently-configured folders will be displayed. Click Create Folder on the upper left to create a new folder that will be the target for the replication job.

  1. Name the new folder. Disable the "Recycle Bin" for this folder because enabled recycle bins on the source will get replicated over anyway. Be sure to check the option for "Backup" as this will designate the folder as a target for backup or replication.

  1. It is suggested to setup the Backup Device Access Key for data secure, so that the share folder will not show up as a backup source or destination on any other TeraStation unless they have the Access Key. Click OK.


Note: Starting from TS5020/3030 firmware version v3.00, it is mandatory to set a backup access key for a backup target share folder.
 

  1. It will take us to the tab for setup the key. Enter the desired Backup Device Access Key and click OK.


Note: TS5020/3030 series starting from firmware version v3.00, the backup access key requires 8 - 20 characters.
 

  1. The new folder should now be included in the folder list. Click Close on the lower right. Target configuration is now complete.

 

Configure the Replication Job on the source TeraStation

Note: If the replication target TeraStation is not a TS5020/3030 with firmware version v3.00 or later, enable this TLS option from Management > Security/Encryption Settings to allow the communication.

 

  1. Open Settings on the source TeraStation and log in. From the "Replication" tab, click the switch to enable the feature, then click the widget to the right.


 

  1. This screen will list existing replication jobs. Click Edit on the lower right to add a new replication job or edit an existing job.

  1. Click Set to enter the Backup Device Access Key that has been setup at the Target side,

  1. Enter the key that was setup at the target TeraStation share and click OK.


Note: TS5020/3030 series starting from firmware version v3.00, requires the backup access key to be 8 - 20 characters. So it is also required to setup the corresponding target's backup access key to be 8 - 20 characters regardless the target model and firmware is.
 

  1. Then click Create to add a new replication job.


 

Replication target Buffalo NAS is on the same network

  1. From the left, you should get a list of folders on the source device. Choose a folder as the replication source.
    From the right, select the target device and folder for this replication job. The newly created folder may not show up in the list initially. If you do not see the folder you created, click Refresh on the upper right.

 

  1. The dialog box appears if you click Refresh. It is recommended to click Yes to completely repopulate the list of available targets.

 

  1. Once the refresh finishes you should now see the newly created target. Select the correct target and click OK.
    Then proceed to Step.23 to continue.

Note: If the replication target has multiple folders designated as backup targets, be certain to select the correct folder. Only one source can replicate to a single folder. Multiple source devices replicating to the same folder will overwrite data.
Note1: TS5020/3030 series starting from firmware version v3.00, "Encrypted data transport" for backups/replications is now the default selection for new setup jobs.



Replication target Buffalo NAS device is on another network but the two networks are connected by a VPN or the route is configured properly.

  1. Click the button "List of Servers".

  1. Click Add.

  1. At “Add Buffalo NAS device”; enter the IP address or hostname of the destination Buffalo NAS device. Then Click OK.

Note: If the target TeraStation is behind a router, enter the router's WAN side IP address.

You will need to map ports 873, 8873, 22936,  22938, and 22939 to the target TeraStation in the router for this to work correctly. If these ports are being blocked by the service provider you will need to work with your service provider to open these ports.

For assistance with configuring port forwarding on a Buffalo router, see here. To configure port forwarding on a different router, please refer to the manual for the specific router.

873         TCP              Backup / Replication
8873       TCP              Backup / Replication(encrypted)- non-WSS TeraStation only
22936     TCP/UDP     BUFFALO Applications (NasNavigator2、FWUpdates and else)
22938     TCP/UDP     Detection between NAS
22939     TCP/UDP     Detection between NAS

  1. Click Close.

  1. The newly created folder may not show up in the list initially. If you do not see the folder you created, click Refresh on the upper right.

  1. The dialog box appears if you click Refresh. It is recommended to click Yes to completely repopulate the list of available targets.

  1. Once the refresh finishes you should now see the newly created target. Select the shared folder that will be the replication source and destination, then click OK.

Note: If the replication target has multiple folders designated as backup targets, be certain to select the correct folder. Only one source can replicate to a single folder. Multiple source devices replicating to the same folder will overwrite data.
Note1: TS5020/3030 series starting from firmware version v3.00, "Encrypted data transport" for backups/replications is now the default selection for new setup jobs.

 

  1. The selected source and target folders should now be listed for the replication job. To finish setup, click OK.

  1. Once you click OK you should get this dialog box. If you have selected a destination folder that already contained data, that data will be deleted.
    Enter the Confirmation Number to continue the operation.

  1. The following message should appear. Do not close or refresh the browser while this message is displayed.

  1. Once the configuration finishes you should be returned to the "Backup" tab of the user interface. The initial replication will now begin. Larger replication jobs may take some time to complete. Subsequent replications will only move changed or new files.

 

NOTE: During replication the data on the target folder may be inaccessible. Replication is a background operation with no progress indicator and a lower internal priority than servicing client requests and may take several hours, especially for an initial replication consisting of several hundred megabytes of data or more. Subsequent replications only copy over changed files and should take less time.

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