Options for increasing server fault tolerance on an SSD nvme drive?

Question

RAID

Good day, dear comrades. Share your experience or thoughts on this topic:
There is a server with nvme ssd (2 pieces on board) for the system and files, the 1c terminal server function is nothing special.
Previously, I always used RAID 1 + 0 on HDD or SSD, but as it turned out on a particular server, there is no way to organize RAID1 between two nvme ssds. After studying this issue a little, I came to the conclusion that raid on nvme ssd is rather bad than good in terms of performance. I decided to leave everything spinning on one nvme SSD drive, but what about fault tolerance? As the second disk "nearby" stands idle. Maybe using third-party software, you can simply mirror at the disk level, for example, clone the entire disk once a day, in case the first one fails, the server will be able to boot from the clone on the second disk?
Otherwise, it turns out that I have a fast server that runs on one disk, without hot swapping (so to speak)
Copies are made using windows tools, to another server, I want to have exactly a clone of the SSD disk "at hand" as it would be in the case of raid1/

Answer 1

Try software RAID. Regular means of the operating system.

Answer 2

came to the conclusion that raid on nvme ssd is rather bad than good in terms of performance

Smart conclusion. Although this is bad not so much in terms of performance, but in terms of speed.

I decided to leave everything spinning on one nvme SSD drive, but what about fault tolerance?

Do you really need her? Many users, high cost of downtime? As a rule, small servers are easier to stop for an hour and roll back from the backup than to fence fault tolerance. In this case - frequent shadow copies, and frequent backup.
But if you need to have a software RAID, there are PCIe boards that allow you to make a RAID from two NVMe drives - here you already think for yourself what is more important fault tolerance or performance.

Copies are made using windows tools, to another server, I want to have exactly a clone of the SSD disk "at hand"

It is not entirely clear how the image of a system disk made using Windows tools differs from a clone of an SSD disk?