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theMotoMan

macrumors member
Original poster
Mar 20, 2020
57
4
Hi all. I posted this in the Mac Pro forum, but did not get any hits on it. Reposting here to see if there are any networking gurus that might have an idea about this.

I have a Synology DS920+ NAS that I have connected to my 2009 Mac Pro. I have a GS308T Netgear Switch connecting the two and both pairs of Ethernet ports are in their own 802.3ad bond. All of that seems good and no errors.

My real question is about obtaining higher throughput from my Mac Pro to the NAS. I really thought I was going to be getting 2x1Gb over the link and would be able to get faster time machine backups, etc. It seems that when I examine the port statistics via the Netgear web interface, that macOS is just sending packets out one port when doing large file copies etc. Is there a way to tweak the macOS port aggregation setup to do a round robin between the two ports when transmitting?

I'm also wondering if my DSL Router's built-in switch is dictating this behavior. I have a CenturyLink DSL modem: Zyxel C3000Z modem with a 4-port switch in it.

My configuration is:
DSL modem port 1 -> 16-port Netgear unmanaged switch
DSL modem port 2 -> 8-port Netgear managed switch
2009 Mac Pro running Big Sur (via OpenCore), virtual bond on the two ports -> Netgear LACP ports 3 & 4
Synology NAS bond using 802.3ad option -> Netgear LACP ports 1 & 2

Thanks in advance!
 

satcomer

Suspended
Feb 19, 2008
9,115
1,977
The Finger Lakes Region
Well Time Machine is poor backup system because it more sick documents, apps from yesterday’s backup! So it first make a whole copy of your Startup drive! Then after that it does incremental backups when thing change! Mac OS main updating will cause it to make a whole new full copy and start over again! So it’s very basic!

Sense Mac OS is based of BSD Unix next system so Unix Cloning still works! One piece of of backup shareware I like is Carbon Copy Cloner because it makes bootable clones!
 
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