Good morning all,
I'm sure this is something that has been discussed already but I seem not to be able to find any reference at the moment.
I have a couple of servers, both with a number of NICs (4 and 6, to be precise) configured with LACP (the switch supports LACP).
Now, I was expecting NAS-to-NAS transfers to hit approx. 4 Gbps (the slowest server has 4 * 1Gbps interfaces) however I can see I a only able to reach 1Gbps as, apparently, rsync only creates a single TCP session which cannot span multiple NICs.
I have tried to start multiple rsync jobs concurrently, hoping that this would allow all the bandwidth to be used however that still hit 1 Gbps top.
I'm sure LACP works just fine as I move from/to each NAS data faster than 1 Gbps (i.e. having 3 wired clients copying from each NAS I can consume ~ 3Gbps).
Is there any way to tell RSync to take advantage of all the available bandwidth and spread the load across multiple NICs configured with Link Aggregation?