When people think about data center networks, they think about speed.
They think about hyperscale connectivity, AI workloads, cloud services, and the high-capacity networks moving petabytes of customer data every day.
But some of the most important networks in a data center never carry a single customer workload.
They’re the IT and OT networks quietly powering everything behind the scenes.
The security cameras monitoring the facility. The access control systems protecting critical assets. The environmental sensors ensuring optimal cooling. The building management systems orchestrating power and automation. The thousands of connected devices that keep the data center running 24/7.
These networks are essential to operations, yet they are often treated as an afterthought.
That mindset is becoming increasingly expensive.
The Hidden Cost of Legacy IT and OT Networks
In today’s data center market, speed matters.
Speed to build. Speed to deploy. Speed to revenue.
Every day a new facility sits unfinished is a day of lost opportunity. Every watt consumed unnecessarily impacts profitability. Every operational inefficiency compounds over the life of the facility.
Yet many data centers still rely on copper-based IT and OT networks designed for a different era.
These legacy architectures require distributed IDF closets throughout the facility, extensive copper cabling, layers of switching equipment, and separate management environments. What was once considered standard practice now creates significant operational challenges:
- Longer deployment timelines
- Increased construction complexity
- Higher power and cooling requirements
- Reduced operational visibility
- More maintenance overhead
- Greater security risk
- Higher lifetime operating costs
The problem isn’t simply that these networks are old.
The problem is that they actively slow down the business.
What If IT and OT Networks Became a Competitive Advantage?
For years, data center operators viewed IT and OT networks as necessary infrastructure—a cost of doing business.
Forward-thinking operators are starting to see them differently.
What if these networks could help accelerate construction?
What if they could reduce energy consumption?
What if they could simplify operations while improving security?
What if they could lower total cost of ownership by as much as 80%?
This is where Passive Optical Networking (PON) and Optical LAN (OLAN) are changing the conversation.
Why Optical Networking Is a Natural Fit for Data Center IT and OT
Unlike traditional copper-based architectures, Optical LAN leverages a centralized passive optical infrastructure that dramatically simplifies network design.
Instead of deploying layers of distributed switches and closets throughout the facility, network intelligence is centralized while passive fiber handles connectivity across the environment.
The result is a network architecture built for modern data center economics.
Eliminate IDF Closets and Reclaim Valuable Space
Every square foot inside a data center has value.
Traditional networks require numerous IDF closets filled with switches, power systems, cooling equipment, and cabling infrastructure.
Optical LAN eliminates the need for these distributed closets entirely.
The result:
- More usable white space
- Lower facility construction costs
- Simplified building design
- Reduced power and cooling requirements
When operators can reclaim space previously dedicated to network infrastructure, they gain flexibility to support revenue-generating assets instead.
Build Faster and Generate Revenue Sooner
Time-to-market has become one of the most important metrics in modern data center development.
The combination of reduced cabling, fewer active components, and simplified infrastructure enables significantly faster deployment compared to traditional copper architectures.
Many operators can reduce build schedules by 30 to 60 days.
In an industry where every month of delay can represent substantial lost revenue opportunity, accelerating service turn-up can create a meaningful competitive advantage.
Reduce Energy Consumption Across the Facility
Power is one of the largest operating expenses in any data center.
Traditional IT and OT networks often require hundreds of active switching devices distributed throughout the facility. Every switch consumes power, generates heat, and requires ongoing maintenance.
Optical LAN dramatically reduces the number of active network components.
Fewer switches mean:
- Lower power consumption
- Reduced cooling requirements
- Smaller operational footprint
- Less equipment to maintain
Over the life of the network, operators can realize total cost of ownership savings of up to 80% compared to traditional copper-based approaches.
Deliver Power Where It’s Needed Most
Modern facilities rely on an ever-growing ecosystem of connected devices.
Security cameras. Access control systems. Sensors. Smart lighting. Building automation platforms.
These systems require both connectivity and power.
Optical LAN supports high-power PoE delivery across the facility, enabling operators to deploy and power critical devices wherever they’re needed without adding complex electrical infrastructure.
This flexibility becomes increasingly valuable as facilities adopt more automation, monitoring, and intelligent building technologies.
Strengthen Security While Simplifying Operations
As operational technology becomes increasingly connected, cybersecurity becomes a growing concern.
Optical networking helps address this challenge through centralized architecture and management.
Instead of monitoring dozens of distributed network elements across multiple closets, operators gain centralized visibility and control through a single management platform.
This approach enables:
- Consistent policy enforcement
- Improved network visibility
- Faster threat detection
- Reduced attack surface
- Simplified compliance management
At the same time, software-defined management and zero-touch provisioning significantly reduce operational complexity.
Rather than spending time maintaining infrastructure, IT teams can focus on strategic initiatives that improve business outcomes.
The Future Is Network Convergence
Historically, IT and OT networks operated independently.
Today, those worlds are converging.
As data centers become more automated, AI-driven, and operationally intelligent, facility systems increasingly depend on seamless communication between IT and OT environments.
Optical LAN provides a foundation that supports both approaches.
Operators can maintain logical separation where required or converge networks where it makes operational and economic sense.
Either way, they gain a scalable, centralized infrastructure capable of supporting future growth without adding complexity.
From Infrastructure to Competitive Advantage
The data center industry is entering a new phase.
Success is no longer defined solely by compute capacity or network throughput. It is increasingly determined by how efficiently facilities can be built, operated, secured, and scaled.
That makes IT and OT networks far more than supporting infrastructure.
They are strategic assets.
By replacing legacy copper architectures with Passive Optical Networking and Optical LAN solutions, operators can accelerate deployments, reduce operating costs, simplify management, strengthen security, and prepare their facilities for the next generation of intelligent operations.
The question is no longer whether data centers should modernize their IT and OT networks.
The question is how much value they’re leaving on the table if they don’t.
Next Steps
Request the Tellabs Data Center Solutions Summary or schedule a discussion with our experts to see how Optical LAN can simplify operations, reduce costs, and accelerate your next data center deployment.