====== transfers ======

===== block device =====
Sender:
<code bash>
dd if=/dev/nvme0n1 bs=32M | pv -s 500G | zstd --fast -T0 | nc -w 2 192.168.177.173 44444
</code>

Receiver:
<code bash>
nc -vl -p 44444 | zstd -d | pv -s 500G | dd bs=32M of=/dev/sda
</code>