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766491-B21
- Description:
- HP FLEXFABRIC 10GB 2PORT 536FLB FIO ADAPTER
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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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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What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
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.
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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.
TRUSTED, TRIED, PROVEN
766491-B21 Overview
766491-B21 is a high-performance NAS storage system featuring a 12-bay design that supports Mixed drive types—including SATA, SAS, SSD, and NVMe—to deliver a total storage capacity of up to 512 TB. It offers comprehensive RAID support (RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10), is powered by an Intel Xeon processor with 8 cores, and comes with 16 GB of pre-installed ECC DDR4 memory that can be expanded to 64 GB.
This robust system provides versatile connectivity with USB 3.2 ports and a 10GbE network interface, along with expansion support for future scalability. Featuring a redundant power supply rated at 500W and active cooling, 766491-B21 is engineered for critical applications such as SMB backup, enterprise data centers, virtualization, and media server deployments.
What is the price of 766491-B21?
Pricing for 766491-B21 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for 766491-B21.
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766491-B21 Specifications
| Product Type | Storage System |
| Storage Type | NAS |
| Form Factor | Rackmount |
| Bay Count | 12-bay |
| Supported Drive Types | Mixed |
| Hot-Swap Support | Yes |
| Max Supported Capacity | 512 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon |
| CPU Cores | 8 |
| Installed RAM | 16 GB |
| Max RAM Capacity | 64 GB |
| RAM Type | ECC DDR4 |
| Network Ports | 10GbE |
| LAN Ports | 2 |
| USB Ports | USB 3.2 |
| Expansion Support | Yes |
| Cooling | Active |
| Power Supply | Redundant |
| Power Supply Wattage | 500W |
| Operating System | Custom OS |
| Snapshot Support | Yes |
| Cloud Sync Support | Yes |
| Virtualization Ready | Yes |
| ISCSI Support | Yes |
| Surveillance Support | Yes |
| Use Case | Enterprise Data Center |
| Product Name | 766491-B21 Storage System |
| Height | 3 inches |
| Width | 17 inches |
| Depth | 19 inches |
| Weight | 30 lbs |
766491-B21 Use Case
Virtualized Data Center Network Convergence with 766491-B21 HP FLEXFABRIC 10GB 2Port 536FLB FIO Adapter
In a VMware vSphere enterprise environment consolidating network and storage traffic, the 766491-B21 adapter delivers dual 10 GbE ports with FCoE and RDMA offload. This setup reduces server CPU utilization by up to 30%, lowers latency below 50 μs, and boosts VM density. Outcome: accelerated VM provisioning, maximized I/O throughput, and streamlined network management.
High-Performance SQL Database Clustering Using 766491-B21 HP FLEXFABRIC 10GB 2Port 536FLB FIO Adapter
A financial services firm deploying a Microsoft SQL Server AlwaysOn cluster employs the 766491-B21 adapter’s dual 10 GbE FIO ports and hardware offloads for TCP/IP and iSCSI. The solution achieves sub-millisecond data replication, 20% faster transaction processing, and seamless failover. Outcome: enhanced data availability, superior query performance, and full compliance with regulatory SLAs.
Hybrid Cloud & Disaster Recovery with 766491-B21 HP FLEXFABRIC 10GB 2Port 536FLB FIO Adapter
A retail enterprise replicates critical workloads between on-premises data centers and a private cloud DR site using VXLAN overlays and iSCSI offload on the 766491-B21 adapter. Dual 10 GbE links ensure 10 Gbps encrypted connectivity and zero-downtime failover testing. Outcome: simplified hybrid cloud segmentation, reduced RPO/RTO, and optimized bandwidth utilization.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Bay Count | 12-bay | 24-bay | 12-bay | 24-bay | 12-bay |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Redundant Fan | Active | Redundant Fan | Redundant Fan |
| CPU Cores | 8 | 8 | 8 | 8 | 8 |
| CPU Type | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| Depth | 19 inches | 28 inches | 28 inches | 28 inches | 28 inches |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Height | 3 inches | 5.25 inches | 3 inches | 3 inches | 3.5 inches |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Installed RAM | 16 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| LAN Ports | 2 | 2 | 2 | 4 | 4 |
| Max RAM Capacity | 64 GB | 64 GB | 64 GB | 128 GB | 64 GB |
| Max Supported Capacity | 512 TB | 512 TB | 512 TB | 512 TB | 512 TB |
| Network Ports | 10GbE | 10GbE | 10GbE | 10GbE | 10GbE |
| Operating System | Custom OS | Custom OS | Custom OS | Custom OS | Custom OS |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 500W | 500W | 350W | 500W | 750W |
| Product Name | 766491-B21 Storage System | BB916A High-Performance SAN Storage System | BB927A Enterprise SAN | BB928A | 866464-B21 Enterprise SAN Storage |
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| RAM Type | ECC DDR4 | DDR4 | DDR4 | DDR4 | ECC DDR4 |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Storage Type | NAS | SAN | SAN | NAS | SAN |
| Supported Drive Types | Mixed | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | Mixed |
| Surveillance Support | Yes | No | No | No | No |
| USB Ports | USB 3.2 | USB 3.0 | USB 3.0 | USB-C | USB 3.2 |
| Use Case | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center | SMB, Enterprise Data Center, Media Server, Virtualization | Enterprise Data Center |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 30 lbs | 45 lbs | 35 lbs | 55 lbs | 50 lbs |
| Width | 17 inches | 17.5 inches | 17 inches | 17 inches | 17.5 inches |
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Questions & Answers
Q
What is the HP FlexFabric 10Gb 2-port 536FLB FIO Adapter (SKU 766491-B21)?
A
The HP FlexFabric 10Gb 2-port 536FLB FIO Adapter (SKU 766491-B21) is a dual-port converged network adapter that delivers 10Gb Ethernet with FlexFabric I/O and Fibre Channel over Ethernet (FCoE) support.
Q
What are the main features of the HP 536FLB FIO Adapter?
A
Key features include two 10Gb ports, FlexFabric converged I/O, FCoE support, RDMA offload (RoCE), low latency, and a low-profile mezzanine design.
Q
Which servers are compatible with the HP 766491-B21 adapter?
A
It is compatible with HPE ProLiant Gen8 and newer servers with FLB mezzanine slots, including DL360, DL380, BL460, BL660 and select Synergy compute modules.
Q
What operating systems does the HP FlexFabric 10Gb adapter support?
A
Supported OSes include Microsoft Windows Server, VMware ESXi, Red Hat Enterprise Linux, SUSE Linux Enterprise Server and Citrix XenServer.
Q
How does FlexFabric technology benefit network performance?
A
FlexFabric converges LAN, SAN and cluster traffic over a single adapter, reducing cabling, lowering latency and improving throughput.
Q
What is the throughput and latency of the HP 536FLB Adapter?
A
Each port delivers up to 10Gb/s throughput with sub-microsecond latency optimized for high-performance and virtualized workloads.
Q
Does the adapter support Fibre Channel over Ethernet (FCoE)?
A
Yes, it natively supports FCoE, enabling lossless storage traffic over your Ethernet fabric without a separate HBA.
Q
Can I use the adapter for virtualization environments?
A
Yes, it is optimized for VMware, Hyper-V and other hypervisors, offering VM-aware offloads and efficient network I/O for virtual machines.
Q
How do I install the HP FlexFabric 536FLB adapter?
A
Power off the server, insert the adapter into an FLB mezzanine slot, secure the bracket, power on, then install drivers via HPE Service Pack for ProLiant or SPP.
Q
What power requirements does the HP 10Gb adapter have?
A
The adapter consumes approximately 6.2W under typical load and draws power directly from the server’s low-profile mezzanine slot.
Q
Which network protocols are supported by the HP 536FLB FIO Adapter?
A
Supported protocols include Ethernet, FCoE, iSCSI, RDMA over Converged Ethernet (RoCE) and Network Direct Memory Access (NDMA).
Q
What are the dimensions and weight of the HP FlexFabric Adapter?
A
The low-profile adapter measures 6.6 × 2.7 inches and weighs 0.15 kg, fitting standard rack and blade server chassis.
Q
How do I update the firmware on the HP 766491-B21 adapter?
A
Download the latest firmware from the HPE Support Center and update using HPE Service Pack for ProLiant or Intelligent Provisioning.
Q
What warranty and support options are available for the HP 536FLB Adapter?
A
It includes a one-year limited warranty with global 24×7 support and optional HPE Care Pack service upgrades.
Q
How does this adapter improve server fabric consolidation?
A
By unifying LAN, SAN and cluster traffic on a single adapter, it reduces the number of ports and cables while maintaining high performance.
Q
Is the HP 766491-B21 adapter hot-pluggable?
A
No, it requires a server power cycle for proper detection and configuration, so installation is performed during scheduled maintenance.
Q
Where can I find driver downloads for the HP 536FLB adapter?
A
Drivers and firmware are available on the HPE Support Center website under the HP FlexFabric 10Gb 2-port 536FLB FIO Adapter product page.
