An inode is a data structure used to keep information about a file on your hosting account. The number of inodes indicates the number of files and folders you have. This includes everything on your account, emails, files, folders, anything you store on the server.
There is currently an limit of 100k/250k inodes on our shared accounts.
What is the 100k/250k inode limit?
Shared and Reseller servers only allow 100,000 files per cPanel. This is a "Soft limit" meaning that while the limit is reached, you will still be able to upload files. However once the account passes the 100,000 file threshold it will no longer be included in our weekly backups. Additionally, if the account happens to exceed 250,000 files then it will be in violation of our Terms of Service and can result in possible suspension.
VPS accounts are limited to one million (1,000,000) inodes. Unlike Shared/Resller accounts this is a "Hard limit," if the threshold is reached you will no longer be able to upload files to your account. Inodes do not affect the weekly backups for VPS accounts.
Dedicated servers have no inode limits in place, only those that exist for the file system on the server (such as ext3).
How can I reduce my inode count?
Simply delete any files or emails you no longer need.