I purposely did another Synology High Availability (HA) Heartbeat Link Aggregation for this test.
First I did my Synology HA with Single LAN Cable (Direct Cable).
Single LAN Cable
It took about 2 days, 12 hours, 44 minutes, 32 seconds (±3644 minutes)
2018/03/31 10:31:00 to 2018/04/02 23:15:32
To have Link Aggregation in your HA. You must create the bond network before you build the HA. Or else you will need to redo. Just like what I did…
It took about 2 days, 13 hours, 35 minutes and 58 seconds (±3695 minutes)
2018/04/04 12:27:03 to 2018/04/06 02:03:01
My Data is about 8TB. It is running in RAID10.
Link Aggregation make thing faster?
So my advice is get a Link Aggregation if you got extra network port.
Thanks for reading!