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Victor Hammond
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High throughput adapter that handled 100Gb workloads reliably in our compute cluster.
872726-B21
HPE IB EDR/EN 100Gb 2p 841QSFP28 Adptr
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872726-B21
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- HPE IB EDR/EN 100Gb 2p 841QSFP28 Adptr
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872726-B21 Overview
872726-B21 is a high-performance SAN storage system designed for demanding enterprise environments. It features 12 drive bays that support mixed drive types including SATA HDD, SAS HDD, SATA SSD, and NVMe SSD, delivering a total storage capacity of up to 512 TB while supporting RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 for robust data protection and performance.
872726-B21 is powered by an Intel Xeon processor with 8 cores and comes with 16 GB of pre-installed DDR4 memory that can be expanded up to 32 GB. The system offers interfaces including USB 3.1, 10GbE network ports supplemented by 2 LAN ports, and provides expansion support. It is equipped with active cooling and redundant power supplies rated at 350W, making it ideal for SMB backup, enterprise data centers, virtualization, and media servers.
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872726-B21 Specifications
- Product Type
- Storage System
- Storage Type
- SAN
- 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
- 32 GB
- RAM Type
- DDR4
- Network Ports
- 10GbE
- LAN Ports
- 2
- USB Ports
- USB 3.1
- 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
- Enterprise Data Center
- Product Name
- 872726-B21 Enterprise Storage Server
- Height
- 3.5 inches
- Width
- 17.5 inches
- Depth
- 28.0 inches
- Weight
- 32 lbs
872726-B21 Use Case
HPC Cluster Acceleration in Scientific Research
A national research lab deploys the 872726-B21 HPE IB EDR/EN 100Gb 2-port 841QSFP28 adapter to interconnect 500+ compute nodes running fluid dynamics simulations. By leveraging RDMA over Converged Ethernet (RoCE) and end-to-end EDR bandwidth, latency drops below 500 ns and aggregate throughput exceeds 80 GB/s. Outcome: simulation runtimes shrink by 40%, enabling faster model iterations and more accurate scientific insights.
Ultra-Low-Latency Financial Trading Networks
A high-frequency trading firm integrates the 872726-B21 adapter into its order-matching engines and market data feed handlers. With sub-microsecond latency and lossless congestion control, the firm executes trades in under 200 ns round-trip time. Outcome: improved quote response, reduced slippage by 30 %, and a measurable boost in trade profitability while maintaining regulatory audit compliance.
Distributed AI/ML Training in Enterprise Data Centers
A global enterprise deploys the 872726-B21 HPE IB EDR/EN 100Gb adapter across GPU-accelerated servers for parameter-server and collective-communication workloads. High-density QSFP28 ports and adaptive congestion management deliver sustained 100 Gbps per link. Outcome: end-to-end model convergence times drop by 50% for large-scale transformer training, accelerating time-to-production for AI-driven analytics and decision support.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 872726-B21 |  BB881A |  BB926A |  BB877A |  867331-B21 | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | SAN | SAN | SAN | SAN |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 12-bay | 36-bay | 12-bay | 12-bay | 12-bay |
| Supported Drive Types | Mixed | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 512 TB | 512 TB | 256 TB | 512 TB | 192 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 | 16 GB | 16 GB | 16 GB | 32 GB | 16 GB |
| Max RAM Capacity | 32 GB | 64 GB | 128 GB | 128 GB | 64 GB |
| RAM Type | DDR4 | DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 10GbE | 10GbE | 10GbE | 10GbE |
| LAN Ports | 2 | 4 | 2 | 4 | 4 |
| USB Ports | USB 3.1 | USB 3.0 | USB 3.2 | USB 3.2 | USB 3.0 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 350W | 350W | 750W | 750W | 500W |
| 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 | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center |
| Product Name | 872726-B21 Enterprise Storage Server | BB881A Storage Appliance | BB926A Enterprise Storage System | BB877A Enterprise SAN Storage System | 867331-B21 Enterprise Storage Array |
| Height | 3.5 inches | 3.5 inches | 3.5 inches | 3.5 inches | 3.5 inches |
| Width | 17.5 inches | 17 inches | 17.3 inches | 17 inches | 17.5 inches |
| Depth | 28.0 inches | 28 inches | 28.7 inches | 28 inches | 28 inches |
| Weight | 32 lbs | 45 lbs | 32 lbs | 45 lbs | 45 lbs |
Reviews & Ratings
S
Saad Qureshi
4
Stable InfiniBand performance with low latency.
L
Liam Prescott
5
Installed cleanly and recognized immediately.
O
Omar Farid
3
Consistent results under sustained load.
J
Julien Moreau
4
Met expectations for EDR networking.
Questions & Answers
What is the HPE IB EDR/EN 100Gb 2p 841QSFP28 Adapter (SKU: 872726-B21)?
The HPE IB EDR/EN 100Gb 2-port 841QSFP28 Adapter is a dual-port network card that delivers 100 Gbps InfiniBand EDR and Ethernet connectivity via QSFP28 interfaces for HPE ProLiant and Apollo servers.
Which network protocols are supported by the HPE 872726-B21 adapter?
This adapter supports InfiniBand Enhanced Data Rate (EDR) at 100 Gbps and Ethernet standards up to 100 GbE, enabling unified fabric deployments for HPC and data-center applications.
What throughput and latency can I expect from this 100Gb QSFP28 adapter?
The HPE 872726-B21 adapter delivers line-rate 100 Gbps throughput per port with sub-microsecond latency for InfiniBand EDR, ensuring high-performance, low-latency data transfers.
Which servers and platforms are compatible with the HPE IB EDR/EN 100Gb adapter?
This adapter is validated for HPE ProLiant Gen9/Gen10 DL and Apollo server families, as well as select HPE Synergy compute modules with available PCIe 3.0 x16 slots.