rsync - Feb 2016 - Why is my rsync transfer slow?

dbonde+forum+rsync.lists.samba.org at gmail.com wrote:
> Thank you. I will try your suggestions. First I will connect the NAS
Ah, you didn't mention NAS ! How is it connected to the computer hosting
"A" ? If via network then you've added *another* layer.
> directly to the computer (Do you recommend USB2 or 1 Gb Ethernet? Or should
I daisy chain external HD and NAS? Then it would look like this:
> 
> Computer <--FW800--> HD <--USB2--> NAS
Highly unlikely to work - the drive won't have a Firewire to USB bridge.
Having the two different ports is to allow the drive to be connected to *a* host
with either Firewire *OR* USB.
> The other option is
> 
> HD <--FW800--> Computer <--USB2 or Ethernet 1000Mbit --> NAS
If you use a network connection then you've still got that network layer. If
connected via USB, does it appear to the host as "just a drive" ? If
so then use that.
> I also might have a look at ditto or CpMac.
Also consider Carbon Copy Cloner - it has a free trial.

Simon Hobson <linux at thehobsons.co.uk> wrote:

>> The other option is
>> 
>> HD <--FW800--> Computer <--USB2 or Ethernet 1000Mbit -->
NAS
> 
> If you use a network connection then you've still got that network
layer.
Just thinking a bit more about that ...

Is your normal setup :
NAS --ethernet--> Computer hosting A
or
NAS --USB--> Computer hosting A

Or is "Computer hosting A" actually the NAS, not another MAC ?

Den 2016-01-26 kl. 09:06, skrev Simon Hobson:
 >>> >>The other option is
 >>> >>
 >>> >>HD <--FW800--> Computer <--USB2 or Ethernet
1000Mbit --> NAS
 >> >
 >> >If you use a network connection then you've still got that
network
layer.
 > Just thinking a bit more about that ...
 >
 > Is your normal setup :
 > NAS --ethernet--> Computer hosting A
 > or
 > NAS --USB--> Computer hosting A
 >
 > Or is "Computer hosting A" actually the NAS, not another MAC ?

NAS <--ethernet--> computer <--FW800--> external disk

The NAS can handle external USB drives and the external disk has USB2 so 
I could set it up like this

external disk <--USB2--> NAS <--ethernet--> computer

but I assumed it meant that I had to transfer the data from the external 
disk to the computer via both USB and ethernet and then transfer it back 
to the NAS over ethernet which, intutively, sounded slow.