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Networks

Required Network Bandwidth

What is it?

The amount of network capacity needed for data transfer.

Theoretical Definition

Network bandwidth = maximum rate of data transfer between servers and the internet/backbone.

Why is it Important?

• High-speed links ensure low latency.
• Redundancy prevents outages.
• Drives application performance.

How is it Planned?

• Estimate workload traffic.
• Enterprise: 10–40 Gbps. Hyperscale: 100–400 Gbps.
• Use multiple ISPs for redundancy.

Impact Down the Line

Under-provisioned = latency, downtime. Over-provisioned = unnecessary cost.

Real World Example

Banks often contract with two ISPs for redundant connections to ensure 24/7 services.

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