“No space left on device” may indicate an account quota, a file-count limit or a full server filesystem. Identify the limit before deleting data or changing plans.
Check storage and file usage
In cPanel, review account statistics and Files > Disk Usage. Identify large directories and check mailbox quotas separately. If inode usage is shown, compare it with the permitted limit.
With authorized Terminal access, these are read-only diagnostics:
df -h
df -i
du -sh ./* 2>/dev/nulldf describes the visible filesystem, not necessarily your individual account’s usage or limit. Contact the provider if the server volume is full.
Clean only identified items
Before deletion, download or verify a restorable backup. Review old archives, test sites and logs in File Manager. Remove only items whose purpose you understand. Emptying trash or permanently deleting a file removes the normal recovery option.
For email, use Webmail or Email > Email Disk Usage to review folders and delete selected messages. Do not remove internal mailbox files with broad shell commands. An IMAP client such as Outlook normally keeps messages on the server.
Do not clear all server PHP sessions or everything in /tmp. Support should check processes and context before such maintenance. If a log keeps growing, fix the error generating it too.
Test and prevent recurrence
After cleanup, test the site, sending, receiving and backups. Set retention to your recovery needs and keep an external copy. Avoid tasks that generate files without rotation.
If the error persists, give support the timestamp, action and observed limit. A larger plan may resolve insufficient account capacity, but does not automatically fix a full server disk or faulty application.
Interface illustrations
These screenshots show earlier versions. Follow the written instructions and your current account values.
