Expanding from a single site to multiple locations isn't just a scaling exercise - it introduces new complexity that requires different thinking. Here are the mistakes we commonly see organisations make.
Mistake 1: Treating All Sites the Same
Not all sites have the same requirements. Your head office needs different capabilities than a small regional branch. One-size-fits-all designs lead to either over-provisioning (wasting money) or under-provisioning (limiting capability).
Design to the requirement. Establish tiers if needed. Accept that some sites will have different architectures - that's not inconsistency, it's appropriate design.
Mistake 2: Underestimating WAN Dependencies
When applications and data are centralised, WAN links become critical infrastructure. Yet we regularly see organisations treat them as commodity connections.
Understand your traffic patterns. Know what happens when a link fails. Have failover that actually works, not just on paper.
Mistake 3: Ignoring Operational Reality
Complex designs require skilled people to support them. If your remote sites don't have local IT staff, your design needs to account for that.
Think about troubleshooting at 2am. Think about what happens when someone unplugs the wrong cable. Build for the reality of operations, not the ideal.
Multi-site networks demand careful planning and realistic assumptions about requirements, dependencies, and operational capabilities. The mistakes are predictable - and avoidable with the right approach.