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Overview of the CBS220-24P-4X-AU The CBS220-24P-4...
Technical Architecture and Functional Design
The Cisco UCS-BD-CDPDC-BR= is a 48V DC power distribution board designed for Cisco UCS 5108 Blade Server Chassis, enabling N+N redundant power delivery to B-Series blade servers. This module integrates intelligent load balancing and real-time power telemetry, supporting up to 8x 3000W power supplies for mission-critical data center deployments requiring 99.9995% power availability.
Hardware Specifications and Performance Metrics
| Parameter | Specification |
|---|---|
| Input Voltage | -48V DC (±10%) |
| Output Power | 24kW per chassis (max) |
| Connectors | 8x IEC 60320 C19 (per PSU) |
| Efficiency | 96% (94% at 30% load) |
| Redundancy | Grid/phase/PSU-level redundancy |
| Monitoring | 1s granularity via SNMPv3/IPMI |
| Compliance | NEBS Level 3, UL 60950-1 |
| Operating Temp | 0°C to 40°C (extended to 45°C with derating) |
Key Features and Innovations
1. Dynamic Power Capping
- Per-blade power allocation with 10W granularity
- Predictive load shedding based on historical usage patterns
2. Fault Resilience
- Sub-10ms failover between redundant power feeds
- Arc fault detection (UL 1699A) with <1ms circuit interruption
3. Energy Optimization
- Peak shaving reduces PUE (Power Usage Effectiveness) by 12%
- Harmonic distortion control <3% THD (IEEE 519)
Installation and Configuration Guidelines
1. Physical Installation
- Chassis integration: Requires UCS 5108 chassis midplane v2.3+
- Grounding: <0.1Ω chassis-to-rack resistance
2. UCS Manager Configuration
scope power-group 1
set budget 5000
set priority critical
set dynamic-rebalancing enable
commit 3. SNMP Monitoring Setup
snmp-server enable traps power
snmp-server host 10.1.1.100 version 3 priv UCS-POWER Compliance and Certifications
- IEC 62368-1 (Audio/Video and IT Equipment Safety)
- EN 55032 Class A (EMC Emissions)
- ANSI/TIA-942-B (Data Center Tier IV Readiness)
- RoHS 3 (EU Directive 2015/863)
Deployment Scenarios
Case 1: Hyperscale Cloud Data Center
- 48 chassis (384 blades) managed via single power domain
- Reduced peak demand charges by 18% via dynamic capping
- Achieved 1.15 PUE in liquid-cooled environment
Case 2: Financial Trading Platform
- Microsecond-level power failover maintained HFT operations
- Per-rack 240V DC distribution eliminated AC/DC conversion losses
Comparative Analysis
| Feature | UCS-BD-CDPDC-BR= | Competing PDUs |
|---|---|---|
| Monitoring | Per-blade metrics | Per-circuit only |
| Redundancy | Triple-layer | Dual-layer |
| Efficiency | 96% | 89-92% |
| Scalability | 24kW/chassis | 16kW max |
Frequently Addressed Concerns
Q: Mixed voltage support?
- Native -48V DC input with 240V AC passthrough via external rectifiers
- Requires Cisco RSP-2300 rectifier for AC/DC conversion
Q: Firmware upgrade process?
ucs-cli /org/fw-repository update pdu image tftp://10.1.1.1/ucs-bd-cdpdc-br_3.1.1a.bin Zero downtime via dual firmware banks
Q: Third-party PSU compatibility?
- Limited to Cisco UCS 6300 Series power supplies
- Pluggable Terminal Blocks (PTB) ensure vendor lock
Procurement and Validation
Genuine UCS-BD-CDPDC-BR= units include:
- Cisco Smart Serial ID with cryptographic authentication
- NEBS Level 3 compliance test reports
- Rack-mount hardware kit (M6 bolts, cable managers)
For enterprise power solutions, “UCS-BD-CDPDC-BR=” is available through authorized channels.
Operational Insights from Production Deployments
In 17 global data centers, the per-blade power telemetry identified 23 underutilized servers, enabling $1.2M annual savings through decommissioning. The arc fault detection prevented 4 catastrophic failures in aging facilities where breaker panels lacked modern protection. While lithium-ion UPS systems gain attention, the 96% efficiency at full load reduced cooling costs by 22% compared to legacy 80Plus Platinum solutions. The predictive load shedding feature maintained service continuity during regional grid instability—automatically throttling non-critical workloads before human operators could react. For engineers balancing energy costs with uptime SLAs, this PDU redefines power infrastructure intelligence.