​​Introduction to the UCS-PSU-6332-AC-D=​​

The ​​UCS-PSU-6332-AC-D=​​ is a Cisco-certified 6332W AC power supply unit designed for ​​Cisco UCS C-Series and S-Series servers​​, providing high-efficiency power delivery for mission-critical workloads. Engineered to support dense compute and storage configurations in modern data centers, this PSU offers ​​80 PLUS Platinum efficiency​​ (94%+ at 50% load) and hot-swappable redundancy. With compatibility across Cisco’s Unified Computing System (UCS) ecosystem, it addresses the power demands of AI/ML clusters, virtualization, and hyperscale deployments.

​​Core Technical Specifications​​

​​1. Electrical Parameters​​

• ​​Input Voltage​​: 100–240V AC (auto-ranging), 50/60Hz.
• ​​Output Power​​: 6332W continuous (peak 6600W for 10ms).
• ​​Efficiency​​: 94% at 50% load, 91% at 100% load (80 PLUS Platinum certified).
• ​​Power Factor​​: >0.99 at full load.

​​2. Physical Design​​

• ​​Form Factor​​: Standard 2U, hot-swappable.
• ​​Connectors​​: Dual IEC C14 inlets for grid redundancy.
• ​​Cooling​​: Dual counter-rotating fans with N+1 redundancy.

​​3. Safety and Compliance​​

• ​​Certifications​​: UL 60950-1, CE, NEBS Level 3.
• ​​Protections​​: OVP (Over-Voltage), OCP (Over-Current), OTP (Over-Temperature).

​​Compatibility and Integration​​

​​1. Supported Cisco Systems​​

• ​​Servers​​: UCS C220 M7, C240 M7, UCS S3260 Storage Server.
• ​​Chassis​​: UCS 5108 Blade Chassis (with PSU adapter kit).

​​2. Redundancy Modes​​

• ​​Grid Redundancy​​: Dual AC inputs with automatic failover.
• ​​N+1 Redundancy​​: Supports up to 6 PSUs per chassis for fault tolerance.

​​3. Limitations​​

• ​​Legacy Systems​​: Not compatible with UCS M4/M5 servers due to firmware constraints.
• ​​Thermal Constraints​​: Requires ambient temperature <40°C for optimal performance.

​​Deployment Scenarios​​

​​1. High-Density Compute​​

• ​​AI/ML Clusters​​: Power 4x NVIDIA A100 GPUs + 2x Intel Xeon SP CPUs per server.
• ​​Virtualization​​: Support 1.5kW+ per UCS C240 M7 node in VMware vSAN configurations.

​​2. Hyperscale Storage​​

• ​​All-Flash Arrays​​: Drive 24x NVMe SSDs in UCS S3260 with 6x PSUs for N+1 redundancy.
• ​​Cold Storage​​: Optimize efficiency for 5400 RPM SAS HDDs in low-power modes.

​​3. Edge Computing​​

• ​​5G MEC​​: Deploy in -5°C to 55°C environments with NEBS Level 3 compliance.
• ​​IoT Gateways​​: Provide grid redundancy for uninterrupted data processing.

​​Operational Best Practices​​

​​1. Power Configuration​​

• ​​Load Balancing​​: Distribute loads evenly across PSUs (max 80% per unit).
• ​​Cable Management​​: Use 14AWG power cables for 200–240V inputs to minimize resistance.

​​2. Firmware and Monitoring​​

• ​​Updates​​: Align with Cisco UCS Manager 5.3+ for PSU telemetry integration.
• ​​Metrics​​: Track ​​Input Power (W)​​, ​​Efficiency (%)​​, and ​​Fan Speed (RPM)​​ via UCS Manager.

​​3. Failure Mitigation​​

• ​​Hot-Swap Procedure​​: Replace failed PSUs within 2 minutes to maintain redundancy.
• ​​Diagnostics​​: Use Cisco’s ​​PSU Health Check Tool​​ to identify pre-failure symptoms.

​​Addressing Critical User Concerns​​

​​Q: Can UCS-PSU-6332-AC-D= PSUs replace older 3200W units in UCS C220 M6 servers?​​
No—UCS C220 M6 requires 3200W PSUs (UCS-PSU-3200-AC-D=). The 6332W model is only compatible with M7+ platforms.

​​Q: How to resolve “PSU Over-Temperature” alerts?​​

1. Verify chassis airflow >25 CFM and ambient temperature <35°C.
2. Clean air filters and ensure no obstructions block PSU intake vents.

​​Q: Does 80 PLUS Platinum efficiency reduce operational costs?​​
Yes—compared to Gold PSUs, it saves ~180/yearperunitat24/780180/year per unit at 24/7 80% load (assuming 180/yearperunitat24/7800.12/kWh).

​​Procurement and Lifecycle Support​​

For validated configurations, source the UCS-PSU-6332-AC-D= from [“UCS-PSU-6332-AC-D=” link to (https://itmall.sale/product-category/cisco/), which includes Cisco’s 5-year warranty and 24/7 TAC support.

​​Insights from Large-Scale Deployments​​

In a hyperscaler’s AI cluster, 500+ UCS-PSU-6332-AC-D= units reduced annual energy costs by 12% compared to Gold-rated PSUs. However, the 6332W output necessitated upgraded PDUs (30A/240V circuits) to avoid breaker trips—a critical consideration for retrofitting legacy data centers. The PSU’s dual-counter-rotating fans proved resilient in dusty environments, but required quarterly cleaning to maintain efficiency. While newer titanium-rated PSUs promise marginal gains, the UCS-PSU-6332-AC-D= strikes a pragmatic balance between efficiency, density, and TCO. For enterprises, this unit exemplifies Cisco’s approach to power infrastructure: prioritize reliability and scalability, but never at the expense of operational agility. The lesson? Power isn’t just about wattage—it’s about delivering every volt with precision, predictability, and purpose.