VMware vSphere

I have a VDI environment.

The virtual desktop run on ESXi server and the ESXi server is local storage.

I want to backup the ESXi server.

If the ESXi server is broken(or local storage is broken), I can restore the ESXi server.

After restore the ESXi server, the user's data still there.

Or

What is VMware's solution for disaster recovery about VDI?

I think you're probably thinking about this in a not-very-optimal way. For VDI (or even regular server virtualization), you really need to have multiple hosts with the VMs living on shared storage. The ESXi host becomes nothing more than a transient vehicle for running VMs, and should that host fail (temporarily or permanently), they would be restarted on other hosts via vSphere HA. By not having this ability you are at a large disadvantage.  But, that said, if you just want to back up the ESXi host configuration there are a couple ways you can do that as outlined here. This is really not a replacement for having a highly-available vSphere environment, however, and I think you need to focus on that first and foremost.

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I see.

If it's can, I also want to use vSphere HA.

But, I don't any share storage in my lab.

How to backup the ESXi host configuration？

Check this for backing up ESXi config VMware Knowledge Base

And that is literally the same link I provided in my response.

How to backup ESXi configure use backup tools, such as veeam or scdpm?

You don't, it's not designed for that.

I am novice and not really sure what you are looking for, but I used this tutorial to backup to USB.

Forgot link - USB Image Tool for Windows easily backs up and restores your complete VMware ESXi hypervisor on USB or SD flash drives, …