The backup failed with message:
Cannot export dump file 'backup_info_<timestamp>.xml' to 'ftp-server name' [Unable to resume interrupted upload. It seems like FTP server deleted the file, when the connection was lost. Try to repeat or perform upload manually]
Unable to upload dump to FTP, it remains in server repository and you can manually download and upload it to FTP. Upload diagnostic message: Data transfer failed because of connectivity problems. Please, check connection to FTP and try again
Following messages in the backup logs %Plesk_dir%PMM\logs\backup- \backup.log:
Error 55 Failed sending data to the peer
This error means issue in hardware or settings of the FTP-server.
Check the following:
- Free space on the FTP-server.
- Quotas for user ftp-user.
- Configuration of LVM if you are using it.
- Enable settings in the FTP server in order to allow interrupted downloads/uploads. For example, configure the file handling options for an FTP site in IIS.