Recently we faced an issue where all of our extracts in The site started to fail due to not enough space in the site. Getting errors that each of the extract exceeded the space available in the site.
We have checked and worked with the admins and found that our site was only consuming 50% of the storage assign.
anyone has ever experienced the issue where extracts are failing with space issue error while there is enough space in the site?
Please check out the online help related to this topic - Troubleshoot Disk Space Usage on Tableau Server Nodes
You can also enable alerts and monitoring per - Server Disk Space
I hope that helps out.