United States$5,000,000+
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Andrew McAllister
5
FlexFabric module provided strong 20 and 40Gb performance.
691367-B21
HP BLc VC FlexFabric-20/40 F8 Module
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691367-B21
- Description:
- HP BLc VC FlexFabric-20/40 F8 Module
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691367-B21 Overview
691367-B21 delivers a robust, modular architecture engineered for seamless integration into diverse network environments. It features flexible power options that support both AC and redundant power supplies, combined with a comprehensive port design featuring multiple Ethernet interfaces and SFP uplink modules.
This switch is optimized for scalability and performance, offering stacking capabilities that ensure streamlined network management and increased switching capacity. Its enterprise-grade design is ideally suited for a wide range of use cases, including core, access, and aggregation layers in data centers and campus networks.
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691367-B21 Specifications
- Product Type
- Switch
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 130 W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair / Fiber
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- 691367-B21
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 24 Gigabit Ethernet ports with 4 SFP uplink modules; expansion slot for additional modules
- Flash Memory
- 64 MB
- Switching Capacity
- 130 Gbps
- Switching Capacity with Stacking
- 260 Gbps
- Product Name
- 691367-B21 Enterprise Layer 3 Managed Switch
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 12 inches
- Weight
- 15 lbs
691367-B21 Use Case
High-Density Virtualization Networking for Enterprise Data Centers
In a large enterprise running VMware ESXi clusters on HP BladeSystem c7000 enclosures, the 691367-B21 HP BLc VC FlexFabric-20/40 F8 Module delivers converged LAN/SAN connectivity at 20/40 GbE per port. By collapsing eight physical I/O uplinks into four FlexFabric channels, IT administrators achieve up to 50% reduction in cabling complexity while guaranteeing lossless storage traffic and dynamic bandwidth allocation. The result: simplified network topology, accelerated VM provisioning by 30%, and predictable performance for mission-critical applications.
Multi-Tenant Cloud Infrastructure for Service Providers
A cloud service provider deploying multi-tenant workloads on HP Virtual Connect networks leverages the 691367-B21 FlexFabric-20/40 F8 Module to partition converged fabrics into isolated Flex-10 networks with per-tenant QoS policies. This ensures each tenant’s VMs and iSCSI storage streams operate on dedicated virtual NICs, eliminating noisy-neighbor issues. Providers achieve 99.99% SLA compliance, streamlined tenant onboarding in under 15 minutes, and up to 40% lower capital expenditure by maximizing existing blade chassis investment.
Low-Latency, High-Availability Database Clusters in Financial Services
A financial institution operating in-memory database clusters on HP BladeSystem infrastructure uses the 691367-B21 HP BLc VC FlexFabric-20/40 F8 Module to create dual-fabric, active/active connectivity for IBM DB2 and Oracle RAC nodes. With sub-microsecond link failover and dedicated lossless Fibre Channel over Ethernet (FCoE) tunnels, the bank achieves 6-nine availability and <2 μs port latency. This configuration guarantees continuous trading operations, accelerates transactional throughput by 25%, and ensures compliance with stringent regulatory RPO/RTO requirements.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 691367-B21 |  QK710D |  Q1H71B |  C8R44B |  Q0U59A | |
|---|---|---|---|---|---|
| Depth | 12 inches | 14.5 inches | 12 inches | 12.0 inches | 14 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 64 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 inch | 1.75 inches | 1.75 inches |
| IOS | IP Services | LAN Base | 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 3 | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | 691367-B21 | QK710D | Q1H71B | C8R44B | Q0U59A |
| Media Type Supported | Twisted Pair / Fiber | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 24 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 with 4 SFP uplink modules; expansion slot for additional modules | 24 x RJ45, 4 x SFP | 24 Ethernet Ports | 24 fixed Ethernet ports and 4 SFP uplink ports | 2 expansion slots for additional modules |
| Power Consumption | 130 W | 35 W | 85 W | 85 W | 120W |
| Power Source | Redundant Power Supply / AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | 691367-B21 Enterprise Layer 3 Managed Switch | QK710D Gigabit Managed Switch | Q1H71B Enterprise Stackable Switch | C8R44B Network Switch | Q0U59A SmartStack 9000 |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | No | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 12 SFP Ports |
| Switching Capacity | 130 Gbps | 128 Gbps | 128 Gbps | 128 Gbps | 176 Gbps |
| Switching Capacity with Stacking | 260 Gbps | 256 Gbps | 256 Gbps | 256 Gbps | 352 Gbps |
| Uplink Configuration | 10G | 1G | 10G | 10G | 10G |
| Weight | 15 lbs | 10 lbs | 12 lbs | 15 lbs | 12 lbs |
| Width | 17.5 inches | 17.5 inches | 17 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
L
Leonard Brooks
4
Reliable for converged networking in blade systems.
V
Victor Calder
5
Stable under mixed traffic workloads.
M
Marcus Holden
3
Reduced network complexity significantly.
P
Peter Langdon
4
Enterprise grade blade networking.
Questions & Answers
What is the HP BLc VC FlexFabric-20/40 F8 Module (SKU: 691367-B21)?
The HP BLc VC FlexFabric-20/40 F8 Module (SKU: 691367-B21) is an 8-port mezzanine adapter for HPE BladeSystem c-Class servers, delivering converged Ethernet and Fibre Channel over a single flexible fabric.
What are the key features of the VC FlexFabric-20/40 F8 Module?
Key features include eight FlexFabric ports configurable as 20 GbE or 40 GbE, hardware-based Fibre Channel support, Quality of Service, and PXE boot over FCoE or iSCSI.
Which HPE servers are compatible with this module?
The 691367-B21 FlexFabric-20/40 F8 Module is compatible with HPE BladeSystem c7000 and c3000 enclosures hosting BLc Gen8 and later blade servers.
What network protocols does the FlexFabric-20/40 F8 Module support?
The module supports Ethernet (Flex-10/FlexFabric), Fibre Channel over Ethernet (FCoE), iSCSI, Fibre Channel, VLAN tagging, and Data Center Bridging (DCB).