The inode is a single file, which in the server. It can be any file on your server including system files, emails, websites files, databases. Inodes are counted automatically and results are displayed in the client area.
Inodes limit is counted only for Container (ordered before 2020) and Storage VPS by the formula:
Disk space (GB) x 15 000
With a minimum of 1000000 Inodes.
Limit of 1000000 and it’s more than enough for most websites. Most customers won’t notice this limit, because it’s way below what the website needs, eg. default WordPress uses less than 1700 inodes.