You must configure external storage for the domain backups.
- Verify that an external (secondary) IP-based storage is connected to the management domain.
- Verify that you have an image-level backup appliance that is integrated with VMware vSphere Storage APIs - Data Protection, and is compatible with the vSphere version used by the management domain available and installed on the management domain.
- Verify that the backup appliance is also hosted on the external, IP-based storage.
- Verify that an SFTP server is available to store file-based backup data.