My company wants resiliency (High Availability) built into our multi-site network. 4 new servers have been purchased and the idea is to build a brand new network and domain to replace the existing.
Over the past week I have been looking into different methods to achieve this High Availability network and have come up with the proposed solution (see attached PDF).
I am very new to this so I would really like someone to have a look over it and offer some advice please.
I'm open to any advice or recommendations.
NOTE: There are approx 20 users per site.