Hw recommendations?

[periko]

Hi.

I need to build a vpn, I have 1 Sie2Site for 6 users, my main site runs a Xeon Quad Core, the other end is a neoware 1Ghz.
Now, need add a 2nd site2site, for 60 users, 80% of the traffic will be email, other will http or smb this 2 services won't eat to much bandwidth, the email will be the king.

Where we have the email server I can receive 50MB symmetric from Cox – site 2.
On the main site where our 60 users will cross over the vpn I can receive 10MB symmetric on site #1(Main Site).

Is more expensive on the main site.

My Main site hw is:

hw.machine: amd64
hw.model: Intel(R) Xeon(R) CPU E3-1220 v3 @ 3.10GHz
hw.ncpu: 4
hw.machine_arch: amd64

8GB RAM.

There I run squid and just 2GB are for this services.

I would like to hear some comments about 3 things:

1. Does my current hw is good for my vpn plan?
2. Does 10MB is a good number for my plan?
3. What came of hw u recommend on the 2nd site(where we have the email server)?

Just to add, the 2nd site will run squid but there we have 10 users, this won't bother me.

Any suggestion I will appreciate, thanks for your time!!!