APC Metered vs Switched PDU: Which One Does Your Data Center Need?

Introduction

Power distribution units (PDUs) are a critical part of any modern data center rack. They not only deliver electrical power to servers and networking gear but also help IT teams monitor and control that power. When evaluating PDU options, understanding the differences between metered and switched models can save time, reduce costs, and improve reliability.

In this guide, we break down the differences, explore use cases, and help you decide: should your data center use a metered PDU or a switched PDU?

Quick Answer 

Should you choose a metered or switched APC PDU for your data center?

• Choose an APC metered PDU if you mainly need power usage visibility and monitoring at the rack level.
• Choose an APC switched PDU if you need remote outlet control and the ability to power cycle devices for maintenance or troubleshooting.

What Is an APC Metered PDU?

A metered PDU provides real‑time power monitoring for the rack. You can see voltage, current, and total power consumption directly at the unit. This helps with capacity planning and detecting power anomalies before they impact operations.

Best for:

• Power monitoring only
• Capacity planning
• Racks with local onsite support

Typical benefits:

• Clear visibility into rack power usage
• Easy budgeting for power capacity
• Alerts if thresholds are breached

What Is an APC Switched PDU?

A switched PDU includes all metered features, but adds remote control of individual outlets. That means IT teams can turn outlets on and off without physically touching the rack—very helpful for remote data centers.

Key capabilities:

• Turn outlets on/off remotely
• Reboot hung servers without onsite access
• Schedule power events

Best for:

• Remote or hybrid data center deployments
• Outages where rebooting is needed
• Automated power workflows

Metered vs Switched PDUs: Side‑by‑Side Comparison

When to Choose a Metered PDU

 You want rack‑level power visibility
You don’t need remote outlet control
 Your data center has onsite technicians
 Budget is a priority

Ideal deployment:
Enterprise racks where the team is present onsite and mainly needs insight into power utilization.

When to Choose a Switched PDU

 You need remote outlet control and reboot capability
Your data center has remote racks
 You want automated or scheduled power events
 You manage distributed sites with minimal onsite staff

Ideal deployment:
Remote edge data centers, colocation environments, or large facilities with minimal physical access.

Data Center Best Practices for PDUs

• Always monitor power capacity headroom to avoid overload
• Use switched PDUs where remote access or uptime resilience is important
• Combine PDU data with environmental sensors for better analytics
• Plan PDU capacity based on future growth not just current needs

Conclusion

Metered PDUs are excellent for visibility and basic power monitoring. They’re cost‑effective and reliable for most enterprise racks.

Switched PDUs go a step further by offering remote control, reboot capabilities, and automation—making them a better fit for distributed data centers or remote management scenarios.

Which one does your data center need?

• If monitoring alone meets your requirements → Metered PDU
• If control and automation are key → Switched PDU