When a hosting account reaches its disk quota, uploads fail, updates stop halfway and email can bounce. WordPress sites grow quietly through backup archives, caches and media. This guide shows how to find what is using the space and what is safe to remove.
Before you start
- Check your usage on the cPanel home screen under General Information → Disk Usage.
- Make sure a recent JetBackup restore point exists before deleting anything (cPanel → JetBackup).
Find the large folders
- Open cPanel → Files → Disk Usage.
- Look at the folder tree; it shows size per folder, including
public_html,mailand hidden folders. - Drill down into the largest items. In File Manager you can also click Settings and show hidden files to see folders such as
.trash.
Over SSH this lists the 20 largest folders in your site:
du -h --max-depth=3 ~/public_html | sort -hr | head -20Common space hogs
| Location | What it is | Safe action |
|---|---|---|
wp-content/updraft, ai1wm-backups, backups-dup-lite | Backup plugin archives | Download what you need, delete old archives, send future backups off-site |
wp-content/cache, litespeed | Cache files | Purge from the cache plugin |
error_log, debug.log | Log files | Delete, fix the errors, turn off debug logging |
wp-content/uploads | Media and thumbnails | Optimise images, remove unused sizes |
| Old staging or copy folders | Forgotten site copies | Delete folder and its database |
.trash in your home folder | Files deleted in File Manager | Empty it in File Manager |
mail | Mailboxes | Delete old mail or set quotas |
Clean up backup archives
Backup plugins storing archives inside the site are the most common cause of full disks, and those archives are also copied into every server backup. Since MdmHost already takes daily JetBackup backups, set your plugin to store copies in remote storage only and delete local archives.
Empty the File Manager trash
Files deleted in File Manager without Skip the trash go to .trash and still count against your quota. In File Manager click View Trash and then Empty Trash.
Reduce media size
- Optimise images and remove backup originals once you are happy with the result.
- Remove thumbnail sizes you do not use in Settings → Media and with a regeneration plugin.
- Host videos on a streaming service rather than in the media library.
Check the database and email
Databases count too: see their sizes in cPanel → Databases → Manage My Databases. Large mailboxes are listed in cPanel → Email → Email Accounts with their usage; clean old messages or archive them locally.
Check the result
Disk usage figures can take a little while to refresh. Reload Disk Usage after a few minutes.
Troubleshooting
- Usage did not drop after deleting files: the files are in
.trash, or the figure has not refreshed yet. - A folder cannot be deleted: wrong ownership; contact support.
- Space fills again quickly: a log or backup job runs on a schedule; find it in the plugin settings or cPanel → Advanced → Cron Jobs.