By Lily / Last update April 22, 2022

What is NAS server?

NAS server is a mean for storing your data on computer network which can be accessible by any computer on the same network. Among all the servers, Synology NAS is one of the most popular servers used in home users and small companies, and the latter one always holds 2 NAS servers. You can install a NAS device directly, or build a NAS Server by your own. 

NAS Server

How do I perform 2 NAS server synchronization? 

"I need to set up a server system for my design studio, and to be honest I really don't have a clue about this. Is it possible to have 2 NAS devices mirror each other (the entire NAS, not just a specific folder) over the internet? I have 2 offices and want to real-time sync any changes/new files made on NAS A to NAS B, and vice versa whenever someone makes changes on NAS B. Any suggestion will be appreciated."

Syncing between two NAS servers provides users more convenience, whether share files with work member or get changes timely, therefore many users are willing to do so. You just need the best free NAS synchroniztion software. Please keep reading below and get it.

What is best free NAS Synchronization Software

There are many nas to nas sync software online, Synology Cloud Station for sync two nas serversnology NAS devices, computers, and mobiles, for example. But it's designed for Synology nas devices only. Therefore, if you happen to have 2 Synology NAS server, you could try Synology cloud station sync between two nas. For detailed steps, you can refer to this aricle: Automatically Mirror Folders to Synology NAS.

Also, there is another NAS synchronization software you can choose, it's AOMEI Backupper Standard. It allows you to sync folders between different NAS in Windows 10/8/7/XP/Vitsa, such as, Synology, Buffalo, QNAP, Netgear etc. But it's not limited to that, you still can sync files to external hard drive, flash drive, cloud storage, network drive etc.

It supports syncing multiple pairs of folders simultaneously so that you can easily and quickly update two folders in two different places.  And its schedule sync feature can help you get changes regularly by syncing files at daily/weekly/monthly. What's more, it still can wake the computer 2 minutes before the scheduled task starts, any time, even midnight. 

Overall, the second one can be a greater choice. And I will introduce this way in details below.

Step  by step guide: sync two NAS servers with AOMEI Backupper

To sync two Synology NAS over internet, you need to do some preparations in advance.

  • Ensure 2 Synology NAS on same network, and remember their IP address you will use later.

  • Check if the folder you want to sync is shared. If not, please share it and set permissions.

  • Download the best free NAS synchronization software - AOMEI Backupper Standard, and install it on your computer.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

Then, follow the steps below to to sync files between two Synology NAS:

Step 1. Launch AOMEI Backupper Standard, click Sync -> Basic Sync in order. 

Basic Sync

Note: If you want to sync files in real-time, you need to use "Real-Time Sync" in AOMEI Backupper Professional.

Step 2. To do Synology NAS to NAS sync, you need to selet files or folders on the source Synology NAS first. 

At the main page of Basic Sync, click + Add Folder and then Share/NAS

Choose Share or NAS

Then, in the new window, click Add Network Location > input the Display Name and Network Path (IP address of the source Synology NAS) to add the source Synology NAS server. 

Add Network Location

After that, the source Synology NAS will be listed under the network location. Double-click it and then choose the folders contains the files that you would like to sync. 

Choose Folder in Synology NAS

Step 3. Click the inverted triangle icon and add destination server by adding all the necessary info of it. Then, select a folder on the destination server to store files you prepare to sync. 

Select a Network Location

Step 4. Preview info about two Synology NAS server synchronization, and click Start Sync to sync data.

Start NAS to NAS Sync

There are some optional settings you could specify before syncing:
Options: You could enable email or SMS notification to get alert after the 2 NAS server synchronization finished, comment the sync task, run specified program or script before or after the sync, etc.
Schedule: You could set an automatic 2 NAS server synchronization with daily, weekly, monthly, event triggers or USB plug in. Please upgrade to AOMEI Backupoper Professional or other editions to enjoy the last two options.

The data sync process will take a while, and it depends how many data you want to transfer. After the process ends, you could go to the target server and check if your content is intact. 

Summing It Up

With the help of the best free NAS synchronization software - AOMEI Backupper Standard, 2 NAS server synchronization is just a piece of cake. You can choose to sync file manually or automatically. Also, you can comment on this task for clearly distinguish from others.

Also, this software is a free file backup software to continuously protect your data. It's safer than sync, because file backup is an image file contaning all your files or folders and you can only use the backed up data after restoring. If you have higher requirements for safety, file backup can be a better choice.