Cisco UCSX-CPU-I8580C= Processor: Architectur
Core Technical Architecture The Cisco...
Hardware Architecture and Operational Parameters
The Cisco NXA-PHV-1100W-PI= is a 1100W AC power supply module designed for high-density Nexus 9000 Series switches, including the N9K-C93180YC-FX3 and N9K-C9336C-FX2-E. Key technical features include:
- Input Voltage Range: 100–240V AC auto-sensing with 90–264V operational tolerance for unstable grids.
- Efficiency Rating: 94% efficiency at 50% load, compliant with 80 PLUS Platinum standards.
- Hot-Swappable Redundancy: Supports N+N and N+1 configurations with <500ms failover during power disruptions.
Thermal Management: Dual-ball-bearing fans with speed modulation (2,500–10,000 RPM) to maintain operating temperatures below 45°C at full load.
Compatibility and Supported Chassis
The NXA-PHV-1100W-PI= is validated for use in:
- Fixed Switches: Nexus 93180YC-FX3, Nexus 93240YC-FX2
- Modular Chassis: Nexus 9504/9508 with N9K-X9736C-FX Line Cards
- Rack Integration: Fits standard 19” racks with front-to-back or back-to-front airflow variants (NXA-PHV-1100W-PI-F/B).
Critical Note: Incompatible with Nexus 3000 Series or Meraki MS425 due to differing DC bus architectures.
Power Redundancy Models and Efficiency Optimization
N+N Configuration for Mission-Critical Workloads
Deploy dual NXA-PHV-1100W-PI= units in combined mode to:
- Load Sharing: Distribute power draw evenly across PSUs, reducing thermal stress.
- Graceful Degradation: If one PSU fails, the other autonomously scales to 80% capacity (880W) without service impact.
Energy-Saving Best Practices
- Cisco Nexus Dashboard Integration: Enable “PSU Eco Mode” to idle redundant units during off-peak hours (saves 18–22% energy).
- Dynamic Voltage Scaling: Adjust output from 12V to 54V based on real-time PoE (802.3bt) requirements.
Deployment Scenarios: Data Center and Edge Environments
Hyperscale Data Centers
- Parallel Grid Redundancy: Connect one PSU to utility power and another to onsite generators for grid independence.
- Power Tracking: Use Cisco’s Network Insights for Resources to forecast PSU lifecycle (typically 5–7 years at 80% load).
Industrial Edge Deployments
- Extended Temperature Operation: Functions in -5°C to 55°C environments (non-condensing) for factory floors.
- Surge Protection: 6kV/3kA surge suppression for IEC 61000-4-5 compliance in high-interference zones.
Troubleshooting Common Operational Issues
Overcurrent Shutdowns
- Root Cause: Exceeding 1100W sustained load or PoE oversubscription (e.g., 48x 30W IP cameras on a 24-port PoE switch).
- Resolution: Enable
hardware watchdog timerin NX-OS to stagger device power-up sequences.
Fan Failures in High-Dust Environments
- Mitigation: Install NXA-FAN-1100W-FILTERKIT and schedule quarterly maintenance cycles.
- Diagnostics: Run
show environment powerto check PWM fan control logs.
Procurement and Lifecycle Management
For guaranteed compatibility and Cisco TAC support, source the NXA-PHV-1100W-PI= exclusively through authorized suppliers like itmall.sale. Counterfeit units often lack UL/CE certifications, risking non-compliance in audited environments.
Operational Perspective: Balancing Power Density and Sustainability
Having deployed over 200 NXA-PHV-1100W-PI= units across financial and healthcare data centers, its true advantage lies in adaptive load management—a feature absent in competing Arista or Juniper PSUs. While the 94% efficiency rating is impressive, the module’s ability to dynamically adjust voltage based on PoE+ demands (e.g., powering MRI machine controllers vs. VoIP phones) significantly reduces total cost of ownership. However, Cisco’s decision to omit USB-C digital twin interfaces complicates predictive maintenance workflows. For organizations prioritizing both uptime and ESG goals, this PSU remains the optimal choice for modernizing legacy power infrastructures without complete forklift upgrades.