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691367-B21
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- HP BLc VC FlexFabric-20/40 F8 Module
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3 Year Extended Warranty
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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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
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|---|---|---|---|---|---|
| Depth | 12.0 inches | 14 inches | 12 inches | 12 inches | 14.5 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 | 1.75 inches | 1 inch | 1.75 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | IP Services | IP Services | IP Services | IP Services | LAN Base |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | C8R44B | Q0U59A | 691367-B21 | Q1H71B | QK710D |
| Media Type Supported | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo | Twisted Pair |
| 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 fixed Ethernet ports and 4 SFP uplink ports | 2 Expansion Slots for additional modules | 24 Gigabit Ethernet ports with 4 SFP uplink modules; expansion slot for additional modules | 24 Ethernet Ports | 24 x RJ45, 4 x SFP |
| Power Consumption | 85 W | 120W | 130 W | 85 W | 35 W |
| 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 | C8R44B Network Switch | Q0U59A SmartStack 9000 | 691367-B21 Enterprise Layer 3 Managed Switch | Q1H71B Enterprise Stackable Switch | QK710D Gigabit Managed 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 | No |
| SFP Ports | 4 SFP Ports | 12 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 128 Gbps | 176 Gbps | 130 Gbps | 128 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 256 Gbps | 352 Gbps | 260 Gbps | 256 Gbps | 256 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G | 1G |
| Weight | 15 lbs | 12 lbs | 15 lbs | 12 lbs | 10 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17 inches | 17.5 inches |
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Questions & Answers
Q
What is the HP BLc VC FlexFabric-20/40 F8 Module (SKU: 691367-B21)?
A
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.
Q
What are the key features of the VC FlexFabric-20/40 F8 Module?
A
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.
Q
Which HPE servers are compatible with this module?
A
The 691367-B21 FlexFabric-20/40 F8 Module is compatible with HPE BladeSystem c7000 and c3000 enclosures hosting BLc Gen8 and later blade servers.
Q
What network protocols does the FlexFabric-20/40 F8 Module support?
A
The module supports Ethernet (Flex-10/FlexFabric), Fibre Channel over Ethernet (FCoE), iSCSI, Fibre Channel, VLAN tagging, and Data Center Bridging (DCB).
Q
What is the maximum throughput of the HP FlexFabric-20/40 F8 Module?
A
Each of the eight FlexFabric ports can run at up to 20 Gbps or be aggregated to 40 Gbps, providing a total fabric bandwidth of up to 160 Gbps.
Q
Does the FlexFabric-20/40 F8 Module support server virtualization?
A
Yes. It supports VMware, Hyper-V, and KVM virtualization with Virtual Ethernet Port Aggregator (VEPA), VMQ, SR-IOV, and NPAR for multi-tenant isolation.
Q
How many physical and virtual ports are available?
A
Physically, the module provides eight FlexFabric ports. Each port can be partitioned into up to four FlexNICs and four FlexHBAs, totaling 32 logical functions.
Q
What cabling options are available for this module?
A
The FlexFabric-20/40 F8 Module uses QSFP+ transceivers or Direct Attach Copper (DAC) cables for 40 Gbps and SFP+ optics for 10 Gbps connections.
Q
What are the main benefits of the HP VC FlexFabric-20/40 F8 Module?
A
Benefits include reduced adapter count, simplified cabling, unified management, flexible bandwidth allocation, and enhanced performance for converged networking and storage.
Q
What is the power consumption of the FlexFabric-20/40 F8 Module?
A
Typical power consumption is approximately 10 W, depending on port speed and traffic patterns, with support for HPE Power Discovery services.
Q
How do I install the HP BLc VC FlexFabric-20/40 F8 Module?
A
Install the module into a supported c-Class mezzanine slot, update server firmware, and configure in HPE Virtual Connect or OneView for network provisioning.
Q
How is the FlexFabric-20/40 F8 Module managed?
A
Manage the module using HPE Virtual Connect Manager, HPE OneView, or RESTful API for automated network configuration and monitoring.
Q
How can I update the firmware on the VC FlexFabric-20/40 F8 Module?
A
Update firmware via the HPE Service Pack for ProLiant (SPP), HPE Smart Update Tools, or OneView using the integrated firmware catalog.
Q
What warranty and support options are available?
A
The module is covered by HPE’s limited lifetime warranty with 3-year, next-business-day support. Extended Care Pack options are available for enhanced coverage.
Q
How can I order or reference the HP FlexFabric-20/40 F8 Module?
A
Order using SKU 691367-B21. Contact an HPE reseller or visit the HPE Parts Store to check availability, pricing, and lead times.
