@PatWest, as Cat0w indicates read the My Cloud User Manual for your device/generation. The single bay/single drive My Cloud has a My Cloud Desktop feature called Safepoint or Backup depending on which firmware version you are using. This feature will backup the My Cloud to a USB drive attached to the My Cloud’s USB port.
Unofficially there are a number of methods to copy the contents of a My Cloud device to another location. Most involve using SSH to modify the firmware files or to use Linux Rsync to copy files to another location.
Or one can use software (like Free File Sync) on their computer to automate the coping of files on the My Cloud to another location on their local network.
