What is inode count?
Inode is the internal data structure that Linux use to store information about the file system object. The inode count is equal to the count of all files and directories in the user account. This includes everything on your account, emails, files, folders and anything you store on the server, for example, each new file or directory add a 1 to the total inode count.
What if I’m using 100% of my inode limits?
If you’re using 100% of your inode limits, you’ll be unable to send or receive further emails or add additional files. It’s also likely your website will fail to load due to session files.
How to reduce the number of inode?
Removing redundant files and folders: you can remove redundant / unnecessary files and folders from your account via File Manager at cPanel or FTP account. Also check your Trash folder and delete unnecessary files and folders permanently.
Removing cache files: Most popular CMS (e.g. WordPress, Joomla, etc) will store several cached files which are used to improve the performance of website. If there are several cache files, you must delete it at regular intervals of time to free up inodes.
Archiving Emails, clearing SPAM / Junk Emails: Emails also add to your inode usage on your account. Remove SPAM/unsolicited emails and archive important emails to your local machine. If you are using webmail to delete any emails, be sure to delete them from the trash folder so that they are removed from the server entirely.