This option is no longer available in cPanel. Are you experiencing consist inaccurate disk space usage reports?
Well, the problem is that (generally) when someone visits the Disk Usage utility, it is because they have a problem with disk space. So they use the utility to figure out where the disk usage is high, then delete a few files, and now they want to see if the problem is fixed....
... but cpanel is "stuck" on the cached disk usage amount and still shows the original disk usage even though they have removed some files.
Previously, the customer could clear the disk usage cache and then they would see the new amount, and the go back to the beginning if more disk space needs to be freed. Now, however, there is no way for the customer to clear the cache so they can see the new disk usage amount, after they have removed some files.
I hope that makes sense and explains the problem?
It would be nice to see the old clear disk usage cache button back. Was it removed for any particular reason?