Ceph cluster of two nodes - is it possible?

Question

Ceph

Good afternoon! Is it possible to implement an analogue of raid 5/6 using two nodes, but with more screws on each node?
That is, two servers, each with 7 or more screws. I mean the organization of redundancy through ceph precisely due to the presence of a large number of screws on two nodes. You can do raids on each server and combine them through a clustered FS. But I only want to keep the system on the raid, and resolve the rest through ceph. I will be grateful for answers or examples of configs.
Thank you!

Answer 1

In theory, it is possible , but the minimum fault-tolerant configuration starts from 3 nodes.

Answer 2

Nothing good will come of it. Even if this business somehow starts up, everything will fall apart when one of the servers is rebooted.