Help me resolve this problem - and lets all learn from it

TOPOLOGY :

• 10GbE Switch Mikrotik CRS326-24S+20+RM
• ISILON NAS with 3 nodes and 2 10GbE NIC each on a round robin system
• SYNOLOGY NAS with 1 10GbE NIC
• WORKSTATION with 1 10GbE NIC

GOAL: to transfer data via rsync from ISILON to SYNOLOGY
PROBLEM: Synology doesn't mark a higher than 70MB/s (560Mb/s) download rate, very far from a 10GbE capable network
TROUBLESHOOTING:

1. iperf test from workstation to ISILON:
2. iperf test from workstation to SYNOLOGY:

​

1. WS to ISILON [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 4.67 GBytes 4.00 Gbits/sec 2.WS to SYNOLOGY [ ID] Interval Transfer Bitrate [ 5] 0.00-10.03 sec 7.32 GBytes 6.27 Gbits/sec 

I am unable to test connectivity directly from SYNOLOGY to ISILON because the latter has an old iperf version (2.x) while synology is already on 3.x. I can't seem to downgrade or upgrade any of them

Please join the combo and lets debate!