receiving part:
nc -l -p6543 | dd obs=1m of=/dev/mapper/pve-vm--301--disk--1


sending part: 
dd ibs=16M if=/dev/sda | nc -q1 filer1 6543


tar cf - . | pv -peta -s 1.3T | nc -q1 server port

---------------

Sender:

SIZE=$(du -sb /var/cache/apt-cacher-ng | cut -f1)

tar cf - * | zstd -1 | pv -s $SIZE | nc -q1 192.168.1.40 2345

Receiver:

nc -l -p 2345 | zstd -d | tar xf -