What are Inodes
Published
If you ever saw a hosting plan that says something like "100,000 inodes", this is what they mean.
Inodes are index nodes, a type of data structure that filesystems use to track files and folders.
In simple terms: every file and every folder counts as an inode.
Why this matters: you can have plenty of storage space left, but if you have too many small files, you can still hit an inode limit and things start failing (uploads fail, emails fail, backups fail, etc).
Common inode killers:
• Thousands of tiny cached images and thumbnails
• Website backup folders piling up
• Log files that never get cleaned
• Email accounts with a massive amount of small attachments
How to reduce inode usage:
1) Clean old backups and old logs
2) Compress archives (zip) instead of keeping thousands of loose files
3) Move big "file libraries" into a dedicated storage plan meant for that use
Bottom line
Inodes is a file count limit. Storage is a size limit. You need both to keep things stable.