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All backup files are listed, with their name, extended with date and time, and size. You can delete a file by clicking the X trash-can button, and then confirming in a delete warning popup. Note that a deleted backup file is not recoverable. Remember as well that older backup file will be deleted automatically in a rolling fashion, based on your specifying how many old files to keep.
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If you which you can download copies of the backup files to your desktop computer.
Below the table you can click on Restore history that shows the restore activity performed in the past.