I have a Synology DS414 NAS device and I would like to allow my whole family to perform backups of their Macs on the NAS storage.

So far I have followed the official Synology guide and created a shared folder to back up my Mac on the NAS. Official manual states:

Synology NAS provides compatibility for backup with Apple Time Machine. Mac users can back up their data to the shared folder of the Synology NAS without problem. Go to Control Panel > File Services > Win/Mac/NFS, tick Enable Mac file service, and choose a shared folder from the Time Machine drop-down menu. The chosen shared folder will become Time Machine's backup destination.

Problem is that the drop-down menu allows you to choose only one shared folder. My question is: How can I create a separate folder for every single user, so that everybody could use Time Machine?


When backing up over the network, Time Machine creates a disk image file (technically a "sparsebundle", which is actually a folder full of files, but Finder presents it like a single disk image file). Each Mac will create its own disk image in the one shared folder. They won't conflict with each other.

  • Ok, but what if I don't want to share password with every user? Shall I create new user only for Time Machine related stuff and share password with everybody? – grzebyk Jan 7 '15 at 22:14
  • 3
    You will only have to share the "disk" password with every user; each sparsebundle can be encrypted and have it's own password to preserve the privacy of the backups. – Jaime Santa Cruz May 20 '15 at 12:55

I think you don't need to create separate "folders" for each user. What you are looking for is quota:

See: https://www.synology.com/en-global/knowledgebase/DSM/tutorial/Backup_Restore/How_to_back_up_files_from_Mac_to_Synology_NAS_with_Time_Machine

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