Using QNAP as backup appliance across a site to site VPN

English Networking
1

Hey guys,

I am in the middle of moving VMs over to a new datacenter and really dont have much of a choice in this setup… For now I am trying to do backups from 1 site to another site over a site to site VPN tunnel. Each site is a 1Gb+ ISP connection and the local networks on each side are setup with 10gb connections/switches… When i run a backup across the site to site to the QNAP i am getting god aweful slow speeds (like 220B/s to 8MB/s with constant up and downs)… Does anyone have any ideas on what i can do to help speed this up? I have spent 3 days looking into the firewalls at each location and could find nothing wrong… Doing just regular file copies across the site to site on regular machines are getting 50+MB/s… And here is the kicker… If i do a local backup to the QNAP its getting 300MB/s+ so I know the hardware is capable. Any idea would be much appreciated… So for on the QNAP i have done 1 change (changing the jumbo frames to 9000) didnt help.

2

Did you try a different protocol ? Maybe whatever VPN protocol you are using is fragmenting too much. (You can also look into lowering the MTU)

e.g.

3

Thanks… We gave that a shot… We played with the MTU size on the tunnel, even turned off every form of encryption on each end to no avail :frowning:

4

So what method are you using to do the backup ?

5

Im using HYCU off Nutanix to backup across the site to site to an SMB share on the QNAP.

6

What happens when you create an SMB share on a PC on the QNAP network and do a backup to that ?

If it’s fast, it’s a QNAP issue
If it’s also slow, it’s an incompatibility of the VPN tunnel and the backup protocol/program

7

I will give that a test this weekend… thanks