UpdraftPlus just passes on the results of asking PHP “how much free space is left?” – via the “disk_free_space” PHP function.
Based on support requests we’ve had, it does seem that on some PHP installs, PHP reports that your disk is full when it is not. We do not have any specific information on why this might happen. If it is causing you a problem, then you should ask your web hosting company to take a look. If they give you any useful information then please do send it back to us!
Posted in: Troubleshooting