Ceph as RAID1 or how can I organize data duplication on two nodes?

Question

linux

Firework!
Comrades help! There are two nodes on proxmox 4 collected in a cluster. On each of the nodes, in addition to the system disk, there is a 1T SSD, and one iSCSI (given from freenas over a 1G network). Now all VMs are on an iSCSI disk, but some critical VMs would like to be kept "locally". And now the question arose: how can you combine two SSDs so that Proxmox understands this?
All my shamanism with Ceph led to the fact that a "partition" of ~ 1.8Tb was obtained, and if you migrate the VM to another node and turn off the "parent", then the VM becomes inaccessible. Yes, I have never dealt with Ceph and understand little about it.
Please tell me how to solve my problem

Answer 1

See DRBD.