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5
Fabric extender module integrated smoothly.
641146-B21
HP BLc Cisco B22HP Fabric Ext Module
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641146-B21
- Description:
- HP BLc Cisco B22HP Fabric Ext Module
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641146-B21 Overview
641146-B21 is a high-performance switch engineered with a robust architecture ideal for scalable network infrastructures. It features an efficient AC power supply with support for redundant configurations, ensuring continuity in mission-critical environments and versatile stacking capabilities for easy expansion.
Designed for demanding applications, 641146-B21 offers comprehensive port options including 24 Gigabit Ethernet ports and 4 SFP uplink ports, delivering reliable connectivity and exceptional throughput. Its advanced performance and streamlined management make it perfect for data centers, branch offices, and high-density network deployments.
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641146-B21 Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Form Factor
- Rack-mount
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- IOS
- LAN Base
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Flash Memory
- 64 MB
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- Yes
- Switching Capacity
- 128 Gbps
- Height
- 1.75 inches
- Weight
- 12 lbs
- Uplink Configuration
- 10G
- Layer Supported
- Layer 2
- Switching Capacity with Stacking
- 256 Gbps
- POE Support
- POE
- Power Consumption
- 60 W
- Width
- 19 inches
- Depth
- 10 inches
- Port/Expansion Slot Details
- 24 Gigabit Ethernet ports, 4 SFP uplink ports
- Manufacturer Part Number
- 641146-B21
- Product Name
- Enterprise 24-Port Stackable Gigabit Switch
641146-B21 Use Case
Accelerating Enterprise Data Center Spine-Leaf Fabric Scaling
In large-scale enterprise data centers requiring low-latency connectivity between HP BladeSystem c-Class enclosures, deploying the 641146-B21-HP BLc Cisco B22HP Fabric Ext Module enables seamless spine-leaf fabric extension over 10/40 GbE links. Benefit: Achieve sub-10 µs latency, scalable up to 160 Gbps per module, and centralized UCS management—resulting in 30% faster application delivery and minimized network congestion.
High-Performance VDI Infrastructure with Cisco B22HP Module
For virtual desktop infrastructure (VDI) environments demanding predictable I/O performance, integrating the 641146-B21-HP BLc Cisco B22HP Fabric Ext Module provides dedicated 40 GbE uplinks from BL460c Gen8 blades directly to the core network. Benefit: Deliver consistent user experience with 1:1 oversubscription, reduce storage-access latency by 25%, and simplify policy-based QoS enforcement.
Robust Multi-Site Disaster Recovery Connectivity
In multi-site DR deployments, the HP BLc Cisco B22HP Fabric Ext Module (641146-B21-HP) extends blade chassis fabrics across geographically dispersed data centers using secure VXLAN overlays over 10 GbE links. Benefit: Enable sub-second failover with zero-touch UCS policy orchestration, achieve RPO <1 s and RTO <5 min, and cut unplanned downtime costs by 40%.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 641146-B21 |  R0P13A |  R0P79A |  658250-B21 |  Q0U55B | |
|---|---|---|---|---|---|
| Depth | 10 inches | 11 inches | 12 inches | 11 inches | 12 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 256 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | LAN Base | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | 641146-B21 | R0P13A | R0P79A | 658250-B21 | Q0U55B |
| Media Type Supported | Combo | Combo | Twisted Pair / Fiber / Combo | Combo | Combo |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 48 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | 24 Gigabit Ethernet ports, 4 SFP uplink ports | N/A | 2 expansion slots for modular interfaces | 24 x 10/100/1000 Ethernet ports with 4 SFP uplink slots | N/A |
| Power Consumption | 60 W | 120 W | 150 W | 75 W | 350W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Enterprise 24-Port Stackable Gigabit Switch | R0P13A High Performance Stackable Switch | R0P79A High Performance Stackable Switch | Enterprise Stackable Managed Switch 658250-B21 | Q0U55B 48-Port POE+ Gigabit Stackable Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 24 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 128 Gbps | 200 Gbps | 128 Gbps | 320 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 256 Gbps | 400 Gbps | 256 Gbps | 640 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G | 10G |
| Weight | 12 lbs | 8 lbs | 15 lbs | 15 lbs | 15 lbs |
| Width | 19 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
H
Henry Collins
4
Reliable connectivity between blade and core switches.
V
Victor Haynes
5
Stable performance with minimal configuration.
N
Neil Parsons
3
Good solution for extending fabric.
O
Oliver Wainwright
4
Predictable and dependable.
Questions & Answers
What is the HP BLc Cisco B22HP Fabric Ext Module?
The HP BLc Cisco B22HP Fabric Ext Module is a half-height passive Fibre Channel pass-thru interconnect designed for HP BladeSystem c-Class enclosures, delivering direct SAN connectivity from blade server adapters to external switches.
What are the key features of the HP BLc Cisco B22HP Fabric Ext Module?
The B22HP offers 16 Fibre Channel ports at up to 4 Gbps each, hot-swappable design, low latency, no active switching, and transparent signal pass-through for predictable SAN performance.
How many ports does the HP BLc Cisco B22HP Fabric Ext Module provide?
The B22HP provides 16 external Fibre Channel ports, supporting up to eight server mezzanine adapters per module and direct connections to external SAN switches.
What bandwidth does each port of the B22HP support?
Each port of the B22HP supports up to 4 Gbps full-duplex Fibre Channel, enabling up to 64 Gbps aggregate bandwidth per module.