Backup Destinations

A backup destination is where O&O DiskImage stores backup data. The destination should be reliable, large enough, and preferably separate from the source computer.

Supported Destination Types

Destination	Description
Local folder	A folder on an internal, external, or removable drive.
USB drive	A removable drive detected by O&O DiskImage; useful for hotplug backups.
NAS / network share	A UNC path such as \\server\share, with optional stored credentials.
WebDAV	A WebDAV server with authentication and optional SSL/TLS.
S3-compatible storage	Object storage such as AWS S3, MinIO, or compatible services.

Primary Destination

When multiple destinations are configured, one can be set as the primary destination. O&O DiskImage displays destination availability, free space, total size, and backup usage where that information is available.

Network Credentials

NAS, WebDAV, and S3 destinations may require credentials. O&O DiskImage stores secrets through Windows Credential Manager, encrypted by Windows, instead of writing passwords into ordinary configuration files.

Use Test connection after entering remote destination settings. It checks whether the destination can be reached and reports common problems such as authentication failure, unreachable host, timeout, certificate issues, or missing S3 bucket.

USB Drive Detection

For local and removable destinations, O&O DiskImage can detect USB drives and present them as selectable destinations. Hotplug backups use enhanced drive matching where possible. Instead of relying only on a drive letter, O&O DiskImage can compare serial number, volume label, size, and model.

Destination Advice

• Use a destination with enough space for the first full backup and several later backup runs.
• Do not keep the only backup on the same disk you are protecting.
• For ransomware resilience, disconnect USB backup drives when not in use or use storage with independent access controls.
• For scheduled NAS backups, test credentials after setup and after password changes.