I can do link aggregation on my Synology NAS but I can't do it with my cheapie unmanaged Gigabit switches so the bottleneck would still be there. 10-Gigabit would be nice but those switches are still rather pricey. I haven't looked into 2.5 Gigabit switches. Maybe I should.
The most I can get on large backups or transfers is about 100 MB/Sec or so (+/-) which is consistent with the limitations of a 1-Gigabit network.
Music playback with the current setup has no noticeable I/O latency or bandwidth issues. It's never been an issue and it is certainly not bound by HDD IOPs.
