Source
Please read the following notes for important setup details and troubleshooting tips for your Synology NAS as the backup source.
To back up (shared) folders:
- The maximum length of the complete folder path for backup is 4080 characters.
- If the backup source folder is an encrypted shared folder or its subfolder, the source folder can be mounted or unmounted when you are creating the backup task.
- You can only back up encrypted shared folders that are mounted, and restore them into encrypted/unencrypted folders.
To restore them encrypted, an encrypted shared folder under the same name must be mounted on the local Synology NAS. The restored folder will not be automatically mounted on startup.
- Backing up data to an encrypted folder is not supported.
- Using remote mounted folders and other package mounted folders as the backup source is not supported. For example, if you install Active Backup for Business on DSM, the related default folder under the shared folder, ActiveBackupforBusiness, is not allowed to be backed up due to file format limitation.
- When choosing to backup the whole volume, once there is a newly created shared folder, it will be automatically added to the backup source.
- Synology NAS can only back up shared folders created on EXT3/EXT4 external devices.
To back up only files within (shared) folders:
- You can back up only the files excluding the subfolders within the (shared) folder you selected. Check the (shared) folders which contain the files you wish to back up in this task, and uncheck all the subfolders.
To back up applications*:
- Backup for certain applications is supported. Currently the supported packages are:
- AD Server
- Calendar
- CardDAV Server
- Chat
- Directory Server
- Drive
- DNS Server
- Glacier Backup
- Hyper Backup
- Hyper Backup Vault
- MariaDB
- MailPlus Server
- Mail Server
- Moments
- Note Station
- Office (Spreadsheet)
- OAuth Service
- Photo Station
- Presto File Server
- Proxy Server
- RADIUS Server
- SSO Server
- Storage Analyzer
- Surveillance Station
- Synology Application Service
- VPN Server
- Web Station
- WebDAV Server
- To know whether a specific package can be backed up and more (e.g. backup contents and limitations), please consult the help document for the package.
- When choosing applications to be backed up, its related shared folders will also be backed up. For example, if users choose to back up Photo Station, its default shared folder "Photo" will also be backed up.
- Some of the applications are supported for configuring detailed settings, for example, backing up specific settings or folders. A button
will be displayed if the selected application is available for these detailed settings. Click the button to configure detailed settings. However, this feature is not supported on all applications. For more details, please consult the help document of the package.
- Synology NAS does not support application backup without a writable EXT3/EXT4 external device.
To back up system configurations:
The system configurations will be backed up by default every time a version is created. When restored, the system configurations will rewrite the current ones if they are in conflict. Below are the system configurations for backup:
- Users and Groups
- Workgroup, Domain, and LDAP
- File Sharing and Backup Services
- Windows File Service (SMB)
- Mac File Service (AFP)
- NFS
- FTP
- Network Backup
- Advanced
- Other Services
- User Home
- Password
- Password Settings
- Password Expiration
- SNMP
- Task Scheduler
- DHCP Scheduler
- Notification
Backing up Windows ACL settings:
The Windows ACL settings of the files on the Synology NAS can be backed up regardless of the file system of the destination.
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* Selected applications only.