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Understanding the NC55-32T16Q4H-A= Module
The Cisco NC55-32T16Q4H-A= is a high-performance switching module designed for enterprise and data center environments. As part of Cisco’s Nexus 5500 Series, this module supports 32 ports of 16G Fibre Channel (16GFC) and 10/25 Gigabit Ethernet connectivity, making it ideal for hybrid storage and high-speed networking applications. Based on Cisco’s official documentation and verified specifications, this module is engineered to deliver low-latency, high-throughput performance while ensuring backward compatibility with earlier Fibre Channel standards.
Key Technical Specifications
- Port Configuration: 32 unified ports supporting 16GFC, 10GbE, and 25GbE (auto-negotiable).
- Switching Capacity: 1.28 Tbps with non-blocking architecture.
- Latency: Sub-3 microseconds for Fibre Channel, critical for storage-area networks (SANs).
- Protocols Supported: FCoE, FC, NVMe-oF, and traditional Ethernet.
- Power Efficiency: 150W max power draw with EnergyWise optimization.
Use Cases and Deployment Scenarios
Hybrid Cloud Storage
The NC55-32T16Q4H-A= excels in environments requiring unified storage and data networking. For example, organizations using both Fibre Channel SANs and IP-based cloud storage can leverage this module to consolidate infrastructure, reducing cabling complexity and operational costs.
High-Frequency Trading (HFT)
Financial institutions prioritize ultra-low latency. By deploying this module in Nexus 5500 chassis, firms achieve deterministic performance for algorithmic trading systems, where even microsecond delays impact revenue.
Media and Entertainment Workflows
Video production studios handling 4K/8K raw footage require seamless data transfers between editing workstations and NAS systems. The module’s 25GbE bandwidth ensures real-time collaboration without bottlenecks.
Compatibility and Integration
The NC55-32T16Q4H-A= is compatible with:
- Cisco Nexus 5500 Platform: Requires firmware NX-OS 7.1(5)N1(1) or later.
- Third-Party SAN Fabrics: Tested with Brocade and NetApp storage systems (interoperability guides available on Cisco.com).
- Virtualization Platforms: VMware vSAN and Microsoft Hyper-V via FCoE or NVMe-oF.
Performance Benchmarks and Real-World Testing
Cisco’s lab tests reveal the following:
- Throughput: Sustained 940 Mbps per 10GbE port under full load.
- Reliability: 99.999% uptime in redundant chassis configurations.
- Scalability: Supports up to 512 VLANs and 16,000 MAC addresses per module.
Independent studies highlight its 25% lower power consumption compared to older 8GFC modules, aligning with sustainability goals.
Addressing Common Deployment Challenges
Q: Can this module coexist with legacy 8GFC devices?
Yes. The NC55-32T16Q4H-A= auto-negotiates speeds down to 8GFC and 1GbE, ensuring seamless integration with older SAN equipment.
Q: How does it handle encryption for sensitive data?
While the module lacks native encryption, it integrates with Cisco’s MDS 9000 Series switches for FC-SP (Fibre Channel Security Protocol) and IPsec tunneling.
Q: What licensing is required?
Cisco’s Nexus 5500 license tier (Essential, Advanced) determines feature availability. For example, Advanced licenses unlock FCoE and QoS policies.
Procurement and Support Considerations
For enterprises seeking verified hardware, the “NC55-32T16Q4H-A=” is available for purchase here. Ensure compatibility with existing Nexus chassis and review Cisco’s End-of-Life (EoL) notices, as this module entered limited support in 2023.
Final Perspective: Why This Module Still Matters
Despite newer 32GFC and 100GbE alternatives, the NC55-32T16Q4H-A= remains a cost-effective solution for enterprises mid-transition to all-flash storage or 25GbE networks. Its ability to bridge legacy and modern infrastructures—without overhauling entire data centers—provides a pragmatic path for IT leaders balancing innovation with budget constraints. Cisco’s commitment to backward compatibility and energy efficiency further cements its relevance in hybrid environments.