If you want to upgrade your KVM server or your virtual server, you may ask yourself if the data will be preserved. The answer is very simple: Yes, the data will be preserved. You do not have to start from scratch.
This is also true if you upgrade your hard disk space. We only increase the size of the server’s hard disk. Your data will remain untouched.
However, please note that it is always advisable to create a backup of all data on an external disk. In case of a technical error, you can then restore your work.