How to set up time machine backups to a NAS directly connected via LAN

How to set up time machine backups to a NAS directly connected via LAN?

Connect MAC and Synology directly via the switch or LAN to LAN with manual IP.

On a MAC

  • Launch ‘System Preferences’ from the Apple menu  (or Spotlight)
  • Click on the “Network” icon.
  • In the lower right, click on the ‘Advanced’ button.
  • In the pulldown menu next to “Configure IPv4” select “Manually” (or DHCP with manual address, if that’s what you need)

On Synology

  • Control Panel
  • Network
  • Network Interface tab
  • Click Edit on LAN port you want to change
  • Set a manual IP in the same range as MAC LAN port.




How do I back up files from my Mac to Synology NAS using Time Machine?


This article will guide you through the process of backing up data from your Mac to Synology NAS using Apple’s Time Machine, a backup utility included with macOS 10.5 and later.



Set up DSM to support Time Machine

  1. Create a shared folder for Time Machine backup.
    1. Sign in to DSM using an administrator account.
    2. Go to Control Panel > Shared Folder and click Create.
    3. Enter a name for the shared folder (such as “Time Machine Folder”) and select a location (if multiple volumes exist). In this example, we chose Volume 1.
    4. We do not recommend you to enable the recycle bin feature or to use encrypted shared folders as your Time Machine destination. Click Next.1
    5. Configure advanced settings for the shared folder as needed and then click Next.
    6. Continue through the wizard to complete the process.
  2. Create a user for Time Machine and set a quota limit.
    1. Do one of the following depending on your DSM version:
      • DSM 7.0 and above: Go to Control Panel > User & Group > User and click Create.
      • DSM 6.2 and below: Go to Control Panel > User, and click Create.
    2. Enter a username and specify a password. Continue through the wizard.
    3. On the Assign shared folders permissions page, assign Read/Write permissions for Time Machine Folder.
    4. On the Assign user quota page, enter a value you prefer in the User Quota field for the Time Machine folder and select a unit from the drop-down menu. After specifying a quota, click Next.2 3
    5. On the Assign application permissions page, tick the Allow checkbox for AFP or SMB and click Next. Those using DSM 6.2 and below can skip this step.
    6. Continue through the next prompts to complete the process.
  3. Set the shared folder as Time Machine’s backup target.
    1. Go to Control Panel > File Services.
    2. Do the following depending on your DSM version:
      • DSM 7.0 and above: For SMB, go to the SMB tab and tick the Enable SMB service checkbox.4 For AFP, go to the AFP tab and tick the Enable AFP service checkbox.
      • DSM 6.2 and below: Go to the SMB/AFP/NFS tab. Tick the Enable SMB service checkbox for SMB4, or tick the Enable AFP service checkbox for AFP.
    3. Go to the Advanced tab and tick the Enable Bonjour Time Machine broadcast via SMB or Enable Bonjour Time Machine broadcast via AFP checkbox. Then, click on the Set Time Machine Folders button.
    4. Choose the shared folder that you just created from the Time Machine menu and save your settings.

Perform Time Machine Backup to your Synology NAS

  1. On your Mac, open System Preferences from the Dock, and click Time Machine.
  2. Click Select Backup Disk.
  3. Choose the shared folder that you created (i.e., Time Machine Folder on “Server name of your Synology NAS.local”) and click Use Disk.
  4. The system will prompt you to provide your account credentials. Enter the username and password for the user that you have just created and click Connect.
  5. Time Machine will soon start backing up your data.


  1. If you want to encrypt your backups, use the encrypt backup option in Time Machine on your Mac instead of encrypting your shared folder.
  2. We recommend you to set a quota to prevent Time Machine from occupying your entire storage space. The quota should be at least two to three times the size of your Mac’s drive, or two to three times the amount of data to be backed up.
  3. Users can only set shared folder usage quotas on models that support Btrfs file system. If your NAS server only supports the ext4 file system, you can only set a usage quote for the entire volume.
  4. For macOS Sierra (10.12) and later, Time Machine uses SMB as the default protocol. We recommend you to perform Time Machine backups via SMB.






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