Still hoping to start a dialogue here ;)
Doing a dd I get a value of 241 MB/s for 32 GB
root@pve2:~# dd if=/dev/zero of=/dev/sda bs=1536M count=20
20+0 records in
20+0 records out
32212254720 bytes (32 GB, 30 GiB) copied, 133.783 s, 241 MB/s
So why am I getting these terrible values in...