dd if=/dev/sda bs=4M status=progress | zstd | ssh -c aes256-ctr root@newserver 'unzstd | tee >(dd of=/dev/sda) | dd of=/dev/sdb'
The authenticity of host 'newserver (1.2.3.4)' can't be established.
ECDSA key fingerprint is SHA256:xxx.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '1.2.3.4' (ECDSA) to the list of known hosts.
root@1.2.3.4's password:
114152177664 bytes (114 GB, 106 GiB) copied, 2109 s, 54.1 MB/s