How to Run Synology Real Time Sync Between Two NAS | 2 Ways

Synology real time sync is more than just a file transfer feature—it is a strategic solution for ensuring your data is always up to date, always available, and always protected. Whether you're running a home office, small business, or enterprise environment, real-time synchronization delivers continuous data consistency across devices and locations without manual intervention.

Read on to get 2 effective methods to sync folders between two Synology NAS in real time.

👉 Method 1: Synology Sync Between Two NAS via Synology Drive ShareSync
👉 Method 2: Synology Sync Between Two NAS Using Best File Sync Tool🔥

Method 1: Synology Sync Between Two NAS via Synology Drive ShareSync

If you need to keep two Synology NAS devices continuously synchronized—whether for data backup, multi-site collaboration, or real-time disaster recovery—Synology Drive ShareSync is the most reliable and efficient solution. It enables one-way or two-way real-time synchronization between NAS devices, ensuring your files stay identical across locations.

Before you begin, make sure you have completed the following:

• Both NAS devices are running the latest DSM version.
• Synology Drive Server (available from Package Center) has been installed on all Synology NAS devices that you wish to sync with.
• You must sign in to the local Synology NAS using an account belonging to the administrators group to create Synology Drive ShareSync connections.

Now follow the steps below to sync data between two Synology NAS devices using Synology Drive ShareSync:

Step 1: Enable Sync Folders

1. Open Synology Drive Admin Console on the remote NAS. Then go to the Team Folder page.

2. Select a Team Folder and click Enable.

3. Set up version control and rotation policy as needed.

Step 2: Set Up Drive ShareSync

1. On your local Synology NAS, open Synology Drive ShareSync, enter the IP address (or the QuickConnect ID), username, and password of the remote Synology NAS.

2. Choose the team folder you want to sync, tick the checkbox Enabled and click Next.

3. To modify the settings, select the folder and click Edit.

• Folder: Edit the local folder location and select specific sub-folders or files that you want to sync.
• File filter: You can filter by file size or file type.
• Sync Mode: Modify permission settings and sync direction.

4. After editing the settings, click Done to finish setting up this sync task.

5. Synology Drive ShareSync will now start syncing and it will consistently sync whether the source or destination folder is modified (unless you change the two-way sync settings).

Method 2: Synology Sync Between Two NAS Using Best File Sync Tool

While Synology Drive ShareSync is great for NAS-to-NAS real-time sync, it can sometimes be complex to set up—especially when you’re syncing between different NAS brands. If you want a simpler, more flexible solution, AOMEI Backupper Professional is your best choice.

⭐ Real-Time Sync: Instantly syncs any file changes from source to target as they happen.
⭐ Other Sync Modes: You can also choose Basic Sync, Mirror Sync or Two-Way Sync to fit your different needs.
⭐ Cross-Device Compatibility: Works perfectly with all NAS brands, local drives, external disks, and network shares.
⭐ Simple Interface: Setup takes minutes, with no technical expertise required.

Download AOMEI Backupper and follow the steps below to sync folders between two Synology NAS devices:

1. Launch the software and select Sync from the left panel. Click Real-Time Sync under the Sync tab.

2. Click Select Source > Share/NAS > Add NAS to enter the path of the local Synology NAS. Select one shared folder on it (the folder you want to sync) and click OK.

3. In the Select Share/NAS Device window, check the folder you added and click OK.

4. Click the destination box and select Add NAS in the next window. Then enter the path of the remote Synology NAS, select one shared folder as sync destination and click OK.

5. Click Start Sync to begin syncing data between two Synology NAS devices continuously.

Note: The Real-Time Sync feature in AOMEI Backupper runs in one way (source → destination). If you want to automatically sync data from source to destination as well as the other way around, choose the Two-Way Sync feature and enable Schedule Sync.

FAQs about Synology Real Time Sync

1. What’s the difference between Synology Drive ShareSync and Shared Folder Sync?

• Synology Drive ShareSync provides near real-time synchronization and integrates with Synology Drive’s Team Folders.
• Shared Folder Sync, on the other hand, uses rsync and usually runs on a scheduled basis (not continuous). It’s simpler but not truly real-time.

2. Can I set up Synology real time sync over the Internet?

Yes. You can sync NAS devices over the Internet by connecting them through QuickConnect, VPN, or port forwarding. However, for better performance and security, it’s recommended to use a VPN or private network when syncing across different sites.

3. What if Synology real time sync is not working properly?

If your real-time sync stops or fails, check the following:

• Both NAS devices are powered on and connected to the same network or VPN.
• Synology Drive Server and Drive ShareSync are up to date.
• The account used for syncing has sufficient folder permissions.
• No firewall or security software is blocking the connection.

To Sum Up

Synology real time sync is a powerful solution for keeping your files instantly updated and secure across multiple NAS devices or computers. Both Synology Drive ShareSync and AOMEI Backupper can help you make it.

If you want more flexibility—such as syncing between different NAS brands, AOMEI Backupper is a better choice. It does much more than just synchronize. You can also use it to backup files to an external hard drive, clone hard disks, etc. Try it now to discover more!