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546SFP+ adapter provided stable 10Gb links.
779793-B21
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HPE Ethernet 10G 2-port 546SFP+ Adptr
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779793-B21
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- HPE Ethernet 10G 2-port 546SFP+ Adptr
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779793-B21 Overview
779793-B21 is a high-performance NAS system featuring 12 drive bays that support SATA HDD, SAS HDD, and SATA SSD configurations with a total storage capacity of up to 96 TB. It supports RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10, is powered by an Intel Xeon processor with 8 cores, and comes with 8 GB of ECC DDR4 memory pre-installed, expandable up to 32 GB.
779793-B21 is equipped with advanced interface options including USB 3.2 and a 10GbE network port with 2 LAN ports, along with expansion support, active cooling, and a redundant power supply rated at 350W. Its design is ideally suited for use cases such as SMB backup, enterprise data centers, virtualization, and media server deployments.
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779793-B21 Specifications
- Product Type
- Storage System
- Storage Type
- NAS
- Form Factor
- Rackmount
- Bay Count
- 12-bay
- Supported Drive Types
- SATA HDD / SAS HDD / SATA SSD
- Hot-Swap Support
- Yes
- Max Supported Capacity
- 96 TB
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10
- CPU Type
- Intel Xeon
- CPU Cores
- 8
- Installed RAM
- 8 GB
- Max RAM Capacity
- 32 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
- 350W
- Operating System
- Custom OS
- Snapshot Support
- Yes
- Cloud Sync Support
- Yes
- Virtualization Ready
- Yes
- iSCSI Support
- Yes
- Surveillance Support
- No
- Use Case
- SMB / Enterprise Data Center / Media Server / Virtualization
- Product Name
- 779793-B21 Enterprise NAS System
- Height
- 4.5 inches
- Width
- 17.2 inches
- Depth
- 16.1 inches
- Weight
- 35 lbs
779793-B21 Use Case
Data Center Uplink Consolidation with HPE Ethernet 10G 2-port 546SFP+ Adapter
In enterprise data centers, IT teams deploy the 779793-B21 HPE Ethernet 10G 2-port 546SFP+ Adapter to aggregate multiple 1GbE server links into dual 10GbE uplinks. This streamlined topology delivers up to 20 Gbps full-duplex bandwidth, reduces cabling complexity by 60%, and slashes latency for virtualized workloads and database clusters.
Optimized VMware ESXi Host Connectivity for High-Density Virtualization
When scaling VMware vSphere farms, system architects install the HPE 779793-B21 Ethernet 10G 2-port 546SFP+ Adapter on ESXi hosts to handle east-west VM traffic. The dual 10GbE SFP+ ports offload TCP/IP processing, boosting VM migration throughput by 40% and lowering CPU utilization, which maximizes consolidation ratios and operational efficiency.
Accelerated SAN Performance with 10GbE HPE 546SFP+ Adapter
Storage administrators integrate the 779793-B21 HPE Ethernet 10G 2-port 546SFP+ Adapter into Fibre Channel over Ethernet (FCoE) or iSCSI networks for high-performance SAN connectivity. Delivering consistent 10 Gbps per port and sub-millisecond latency, this solution accelerates backup/recovery workflows by 30% and simplifies SAN topology for real-time analytics.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 779793-B21 |  BB928A |  866464-B21 |  BB903A |  BB878A | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | NAS | SAN | SAN | SAN |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 12-bay | 24-bay | 12-bay | 24-bay | 12-bay |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD | Mixed | Mixed | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 96 TB | 512 TB | 512 TB | 512 TB | 512 TB |
| 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 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| CPU Cores | 8 | 8 | 8 | 8 | 8 |
| Installed RAM | 8 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| Max RAM Capacity | 32 GB | 128 GB | 64 GB | 64 GB | 64 GB |
| RAM Type | ECC DDR4 | DDR4 | ECC DDR4 | DDR4 | DDR4 |
| Network Ports | 10GbE | 10GbE | 10GbE | Fibre Channel | 10GbE |
| LAN Ports | 2 | 4 | 4 | 4 | 4 |
| USB Ports | USB 3.2 | USB-C | USB 3.2 | USB 3.0 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Redundant Fan | Redundant Fan | Active | Active |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 350W | 500W | 750W | 750W | 750W |
| Operating System | Custom OS | Custom OS | Custom OS | Custom OS | Custom OS |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| Surveillance Support | No | No | No | No | No |
| Use Case | SMB / Enterprise Data Center / Media Server / Virtualization | SMB, Enterprise Data Center, Media Server, Virtualization | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server | SMB / Enterprise Data Center / Virtualization / Media Server |
| Product Name | 779793-B21 Enterprise NAS System | BB928A | 866464-B21 Enterprise SAN Storage | BB903A Enterprise Storage Array | BB878A Enterprise SAN Storage System |
| Height | 4.5 inches | 3 inches | 3.5 inches | 3.5 inches | 3.5 inches |
| Width | 17.2 inches | 17 inches | 17.5 inches | 17.5 inches | 17.3 inches |
| Depth | 16.1 inches | 28 inches | 28 inches | 28 inches | 29 inches |
| Weight | 35 lbs | 55 lbs | 50 lbs | 45 lbs | 45 lbs |
Reviews & Ratings
S
Shahbaz Ali
5
Works well with SFP+ optics.
T
Tobias Frank
4
Installed easily.
H
Haris Latif
5
Good performance.
P
Paul Newton
5
Satisfied.
Questions & Answers
What is the HPE Ethernet 10G 2-port 546SFP+ Adapter (SKU: 779793-B21)?
The HPE Ethernet 10G 2-port 546SFP+ Adapter is a dual-port SFP+ network card delivering up to 20 Gb/s aggregate throughput for HPE ProLiant servers.
Which HPE servers are compatible with this adapter?
This adapter is compatible with HPE ProLiant Gen8, Gen9, Gen10 and Gen11 servers featuring a PCIe 3.0 x8 expansion slot.
What interface does the 779793-B21 adapter use?
It uses a PCI Express 3.0 x8 interface to provide high-bandwidth connectivity and low latency.
What network speeds does the HPE 546SFP+ support?
Each port supports 10 Gb/s full-duplex speeds, delivering up to 20 Gb/s aggregate throughput.
Which SFP+ transceivers and cables are supported?
It supports HPE-qualified 10 Gb SR, LR and ER optical transceivers, as well as 10 Gb SFP+ direct attach copper (DAC) cables.
Can I use both ports independently?
Yes, each SFP+ port operates independently for link aggregation, load balancing and network segmentation.
Does the adapter support virtualization offloads?
Yes, it supports SR-IOV and PCIe I/O virtualization features to optimize VM density and network performance.
Is boot from SAN supported?
Yes, the adapter supports boot from SAN over iSCSI and FCoE (with appropriate HPE software licenses).
What operating systems are supported?
Supported OSes include VMware ESXi, Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server and more.
How do I install the 546SFP+ adapter?
Insert the adapter into an available PCIe 3.0 x8 slot, secure it with the retention bracket and install the latest HPE network drivers.
What is the power consumption of the adapter?
Typical power consumption is approximately 4 W per port under full-load conditions.
Does the adapter support RDMA or SMB Direct?
Yes, it supports RDMA over Converged Ethernet (RoCE) and Microsoft SMB Direct for low-latency data processing.
What warranty does the HPE 779793-B21 include?
It comes with a one-year limited warranty, with options to upgrade to HPE Foundation Care or Proactive Care services.
What are the physical dimensions of the adapter?
The full-height adapter measures 167 mm x 68.9 mm and weighs approximately 120 g (excluding cabling).
Can I mix fiber and copper cables on this adapter?
Yes, both fiber SFP+ modules and direct attach copper cables can be used interchangeably on either port.
What are the key benefits of the HPE Ethernet 10G 2-port 546SFP+ Adapter?
It delivers high throughput, low latency, advanced virtualization offloads and broad OS support to optimize server network performance.