Shared Folder Sync

Shared Folder Sync allows users to sync shared folders from one DiskStation (the source) to other DiskStations (the destinations) in LAN or over the Internet. It works on the basis of shared folders. When syncing, if there is already a folder with the same name at the destination DiskStation, the folder of the destination will be renamed as "xxxxxx_1", "xxxxxx" the original folder name. If such folder doesn't exist, it will be created in the corresponding volume or the first available volume. The privilege for accessing this folder at the destination DiskStation will be set as default, which means none privileges will be specified for this folder.

For the first time syncing, Shared Folder Sync will makes a full sync of the selected shared folder(s). Afterwards, only changed files will be synced. Files that have been removed from the source will also be removed at the destination.

To Start the Service

Now you can start to sync shared folders from source to destination DiskStation. Please follow the sections below to continue.

Manage Sync Tasks

With Shared Folder Sync Wizard, you can easily create a sync task.

To create a sync task:

  1. Go to Main Menu > Backup and Restore. Then click the Shared Folder Sync tab.
  2. Click Create.
  3. Enter a name for the task.
  4. Select the shared folder you want to sync to the destination. Check the checkbox below to confirm and click Next to continue.
  5. Set up the destination and the following sync options:
  6. Set up schedule for the task:
  7. Click Apply. Now you can see the sync task on the task list, which will be performed according to the specified schedule.

To manage a sync task:

  1. Select the task on the task list.
  2. Do any of the following:

More Information

  1. Task name must be of 1 to 32 Unicode characters and must not contain the following characters:
    ! " # $ % & ' ( ) * + , / : ; <= > ? @ [ ] \ ^ ` { } | ~
  2. If you sync shared folders from ext4 to ext3 file system, you may encounter errors when the task contains over 32,000 folders.
  3. If the shared folders in the destination DiskStation have been synced with other DiskStation before, Shared Folder Sync will perform a full sync for the task.
  4. To perform Shared Folder Sync tasks, you need the admin privilege of the destination DiskStation. Either you have its admin account's password, or you are in the administrative group of it.
  5. When syncing to DiskStation over the Internet, you can enter the server name by its external IP address or its hostname. However, if you choose to enter its hostname, the name must be in FQDN(Fully Qualified Domain Name) format, like "www.synology.com".
  6. For port-forwarding, Shared Folder Sync uses port 22 for encrypted transfer and port 873 for unencrypted transfer.
  7. External storage devices are not supported by Shared Folder Sync.
  8. Encrypted shared folders needed to be mount manually with encryption key at destination.
  9. Scheduled Shared Folder Sync will not run at the specified time if no changes have been made to the selected shared folder.
  10. For best performance, we suggest each sync task includes less than 200 shared folders.