I have similiary situation like in question Increase transfer rate with Link Agreggation
But with some different purposes - need increas backup speed. ServerA - backup media server (Win2008r2); ServerF - file share (Win2012); and switch (24x 1Gbit support LACP, Link Agg etc)
Both of servers has two 1Gbit network adapters.
Problem - backup task runs too many hours (more 3TBs in each task). After perfome configuration LACP on both servers and switch ports - upset: copy file between hosts - speed not growth upper 113megabytes\sec. I try measure if iperf - same result. One positive thing - while different clients copy files each use approximate 1Gbit (140-150megabytes together).
After seaching on web - found same discussion were explaned aggregation speed behavior: no speed increase for one stream (IP > IP).
Maybe some other protocols can help me speedup backup jobs tasks ?
UPDATE 1: In this brochure (page 9) https://blog.pingus.de/wp-content/uploads/2016/11/Backup-Exec-Best-Practices-Guide-v.4.0.pdf comparsion table consist mark about teaming with 200MB\s speed. Video https://www.youtube.com/watch?v=O7V0qz6Q1mw