Using soft ether for access to multiple systems by same user

[questorfla]

I am very new to Soft Ether and this question may sound "dumb" but I am hoping someone can give me a clue about the best way to proceed.
We have about 30 users who connect to the same system with SoftEther and it has worked out perfectly. There are still things I need to fine tune but overall it works far better than the old Windows VPN ever did.
he question is with regard to these same users accessing a 2nd system. We are experiencing issues already with things getting slower and i thought that maybe separating the two procedures where the VPN is involved (backups vs SQL DB access) into two separate systems might help speed up both.

The functions of the SQL system have nothing at all to do with the storage of old backups of important files and folders.

In the past, this was all done on a single Server because of the convenience of the Windows VPN for secure Outside Access. Due to recent issues with the SQL db software as new users have been added, I would like to move the Backup/Storage function to a separate system.

This "Backup System" can either be on a separate IP/router etc or could be just another system on the same Office subnet. The VPN as now used takes the users direct to the Server with the SQL DB on it.
What would be the best way to configure this for access to the 2nd system? The backed up files and folders can sometimes get to be large and the extra traffic going through the single Office router was one thing I am not sure of.
Also using a 2nd router and 2nd network IP means a 2nd VPN Server which is just one more thing to have to keep up with.
What would be the most likely "bottleneck" in a setup like this and what is the best way to avoid it?

Again, I am totally new to this and the answers may be pretty obvious to someone but I would rather ask than try to guess.

[GIANT_CRAB]

Input and output would be easily bottlenecking since database is involved. Using a SSD will definitely help.

If good network encryption is not needed, I would suggest you to use a RC4 or MD5 cipher. This would reduce the amount of workload your CPU have to handle.

If the network speed of 1gbps link is insufficient, I suggest you to setup a bonded LCP 2gbps link. But I doubt this would happen as IO would definitely be the first to bottleneck.

[cedar]

If you need only SQL DB mirroring, try to make a backup file in DB server locally and send it by FTP.