Too many files, regardless of their size.
WHAT AN INODE IS
One file or directory, whatever its size. The limit counts items, not bytes.
WHY IT MATTERS
An account well under its disk limit can be at its inode limit, producing the same failures: uploads refused, mail undelivered, writes failing.
WHERE THEY ACCUMULATE
Cache directories, which generate very many small files Session files Email, since each message is a file Backup tools storing files individually rather than archiving Node modules and dependency directories Log files rotated daily
FINDING THEM
Over SSH, count files per directory to identify the largest contributors.
In File Manager, the usual suspects are cache, sessions and mail directories.
CLEARING THEM
Purge application caches, which frequently reclaims a large share Clear old session files Empty Trash and Junk in mailboxes Remove old backups Remove dependency directories not needed in production
PREVENTING IT
Configure cache expiry rather than letting it grow indefinitely Archive rather than storing many files Check the statistics panel monthly
