ReadyNAS Ultra4 - what can I do with it?

ok. I am using two systems in this scenario for the iperf3 -  readynas01 (the readynas) and plexk8s01 (vm)

xxxxxxxxx@readynas01:~$ iperf3 -c ip.of.vm
Connecting to host ip.of.vm, port 5201
[ 5] local 192.168.x.x port 56748 connected to 192.168.x.x port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 115 MBytes 961 Mbits/sec 0 450 KBytes
[ 5] 1.00-2.00 sec 112 MBytes 943 Mbits/sec 0 518 KBytes
[ 5] 2.00-3.00 sec 112 MBytes 937 Mbits/sec 0 518 KBytes
[ 5] 3.00-4.00 sec 113 MBytes 947 Mbits/sec 13 434 KBytes
[ 5] 4.00-5.00 sec 112 MBytes 943 Mbits/sec 13 413 KBytes
[ 5] 5.00-6.00 sec 111 MBytes 934 Mbits/sec 0 450 KBytes
[ 5] 6.00-7.00 sec 112 MBytes 943 Mbits/sec 0 468 KBytes
[ 5] 7.00-8.00 sec 110 MBytes 921 Mbits/sec 0 488 KBytes
[ 5] 8.00-9.00 sec 111 MBytes 929 Mbits/sec 0 491 KBytes
[ 5] 9.00-10.00 sec 112 MBytes 944 Mbits/sec 0 491 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.09 GBytes 940 Mbits/sec 26 sender
[ 5] 0.00-10.01 sec 1.09 GBytes 938 Mbits/sec receiver

iperf Done.

xxxxxxx@plexk8s01:~$ iperf3 -c ip.of.readynas
Connecting to host x.x.x.x, port 5201
[ 5] local 192.168.x.x port 45924 connected to 192.168.x.x port 5201

[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 116 MBytes 970 Mbits/sec 0 3.99 MBytes
[ 5] 1.00-2.00 sec 111 MBytes 933 Mbits/sec 541 2.80 MBytes
[ 5] 2.00-3.00 sec 111 MBytes 933 Mbits/sec 0 3.05 MBytes
[ 5] 3.00-4.00 sec 112 MBytes 944 Mbits/sec 0 3.27 MBytes
[ 5] 4.00-5.00 sec 112 MBytes 944 Mbits/sec 0 3.45 MBytes
[ 5] 5.00-6.00 sec 112 MBytes 944 Mbits/sec 0 3.59 MBytes
[ 5] 6.00-7.00 sec 111 MBytes 933 Mbits/sec 0 3.71 MBytes
[ 5] 7.00-8.00 sec 112 MBytes 944 Mbits/sec 0 3.80 MBytes
[ 5] 8.00-9.00 sec 112 MBytes 944 Mbits/sec 0 3.85 MBytes
[ 5] 9.00-10.00 sec 111 MBytes 933 Mbits/sec 75 2.79 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.10 GBytes 942 Mbits/sec 616 sender
[ 5] 0.00-10.02 sec 1.10 GBytes 940 Mbits/sec receiver

iperf Done.

test from VM to another VM

xxxxxxxx@plexk8s01:~$ iperf3 -c ip.of.other.vm
Connecting to host 192.168.X.X, port 5201
[ 5] local 192.168.X.X port 40112 connected to 192.168.X.X port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 115 MBytes 964 Mbits/sec 0 3.15 MBytes
[ 5] 1.00-2.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 2.00-3.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 3.00-4.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 4.00-5.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes
[ 5] 5.00-6.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 6.00-7.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 7.00-8.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
[ 5] 8.00-9.00 sec 111 MBytes 933 Mbits/sec 0 3.15 MBytes
[ 5] 9.00-10.00 sec 112 MBytes 944 Mbits/sec 0 3.15 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.10 GBytes 944 Mbits/sec 0 sender
[ 5] 0.00-10.03 sec 1.10 GBytes 941 Mbits/sec receiver

iperf Done.