Domestic ECS servers are generally configured with 40G (Alibaba Cloud) and 50G (Tencent Cloud) cloud disks, which are the default standard cloud disk capacity. In terms of building a website, is 40G enough? Do you need to add additional data disks? Many new users have questions about this, and Lao Wei specially wrote an article to explain it. The space occupied by the server operating system is generally divided into two parts: