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Converged adapter delivered reliable network and storage traffic.
BK835A
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HP CN1100E 2P Converged Network Adapter
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BK835A
- Description:
- HP CN1100E 2P Converged Network Adapter
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BK835A Overview
BK835A is a SAN storage solution featuring an 8-bay design that supports Mixed drive types including SATA HDD, SAS HDD, SATA SSD, and NVMe SSD, offering a total storage capacity of 256 TB with comprehensive RAID support (RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60, and JBOD). It is powered by an Intel Xeon processor with 8 cores and comes with 16 GB of pre-installed memory that can be upgraded to a maximum of 64 GB using ECC DDR4 technology.
This storage system provides versatile connectivity through USB 3.2, 10GbE network ports, and Fibre Channel interfaces, ensuring high-speed access and robust network support. With expansion support, redundant power supply (350W), active cooling, and built-in redundancy features, BK835A is engineered for demanding use cases such as SMB backup, enterprise data centers, virtualization, and media server applications.
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BK835A Specifications
- Product Type
- Storage System
- Storage Type
- SAN
- Form Factor
- Rackmount
- Bay Count
- 8-bay
- Supported Drive Types
- Mixed
- Hot-Swap Support
- Yes
- Max Supported Capacity
- 256 TB
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD
- 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
- 4
- 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
- Enterprise Data Center
- Product Name
- BK835A Storage System
- Height
- 3.5 inches
- Width
- 17.5 inches
- Depth
- 27.5 inches
- Weight
- 35 lbs
BK835A Use Case
High-Density VMware vSphere Virtualization for Financial Enterprises
A global bank deploys the BK835A-HP CN1100E 2P Converged Network Adapter in its VMware vSphere clusters to consolidate LAN and SAN traffic over dual 100 GbE links. By offloading RDMA, iSCSI and TCP/IP processing, the adapter reduces host CPU utilization by up to 30%, increases VM density by 25% and delivers consistent sub-millisecond latency. Outcome: higher consolidation ratios, lower TCO and predictable performance for mission-critical trading applications.
Low-Latency RoCE-Accelerated HPC and Big Data Analytics in Healthcare Research
A medical research institute integrates the BK835A-HP CN1100E adapter into its GPU-accelerated HPC cluster and Hadoop/Spark nodes to leverage RDMA over Converged Ethernet (RoCE v2). The solution achieves over 150 Gb/s of bidirectional throughput with sub-1 µs latency and offloads network processing from CPUs. Outcome: simulation and analytics runtimes shrink by 40%, accelerating drug discovery and personalized medicine insights.
Secure, High-Speed Multi-Site Disaster Recovery for Retail Chains
A nationwide retail chain uses the BK835A-HP CN1100E adapter to connect primary data centers and DR sites via VMware vSAN and iSCSI over 100 GbE. Built-in TLS encryption and inline deduplication offloads ensure secure, efficient replication with minimal host overhead. Outcome: recovery point objectives (RPO) of seconds, recovery time objectives (RTO) under minutes and a 50% reduction in replication bandwidth costs.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| BK835A |  BB926A |  BB903A |  766490-B21 |  779793-B21 | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | SAN | SAN | SAN | NAS |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 8-bay | 12-bay | 24-bay | 12-bay | 12-bay |
| Supported Drive Types | Mixed | Mixed | Mixed | Mixed | SATA HDD / SAS HDD / SATA SSD |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 256 TB | 256 TB | 512 TB | 512 TB | 96 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | 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 |
| 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 | 16 GB | 8 GB |
| Max RAM Capacity | 64 GB | 128 GB | 64 GB | 64 GB | 32 GB |
| RAM Type | ECC DDR4 | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 10GbE | Fibre Channel | 10GbE | 10GbE |
| LAN Ports | 4 | 2 | 4 | 4 | 2 |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.0 | USB 3.2 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Redundant Fan | Active | Redundant Fan | Active |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 350W | 750W | 750W | 750W | 350W |
| 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 | Enterprise Data Center | SMB / Enterprise Data Center / Virtualization / Media Server | Enterprise Data Center | SMB / Enterprise Data Center / Media Server / Virtualization |
| Product Name | BK835A Storage System | BB926A Enterprise Storage System | BB903A Enterprise Storage Array | 766490-B21 High-Performance SAN Storage System | 779793-B21 Enterprise NAS System |
| Height | 3.5 inches | 3.5 inches | 3.5 inches | 3.5 inches | 4.5 inches |
| Width | 17.5 inches | 17.3 inches | 17.5 inches | 17.5 inches | 17.2 inches |
| Depth | 27.5 inches | 28.7 inches | 28 inches | 28.5 inches | 16.1 inches |
| Weight | 35 lbs | 32 lbs | 45 lbs | 35 lbs | 35 lbs |
Reviews & Ratings
I
Imran Siddiqui
5
Good throughput under load.
J
Jonas Richter
4
Recognized immediately by servers.
M
Matti H'nninen
4
Stable performance.
K
Kevin Turner
5
Met requirements.
Questions & Answers
What is the HP CN1100E 2P Converged Network Adapter (SKU BK835A)?
The HP CN1100E 2P Converged Network Adapter (SKU BK835A) is a dual-port 10GbE PCIe 3.0 add-in card that consolidates Ethernet, Fibre Channel over Ethernet (FCoE) and iSCSI traffic for HPE ProLiant and BladeSystem servers.
What bandwidth speeds does the HP CN1100E 2P adapter support?
Each of the two ports delivers up to 10 Gb/s full-duplex Ethernet, with auto-negotiation to 1 Gb/s and hardware-accelerated FCoE and iSCSI offloads.
Which HPE servers are compatible with the CN1100E 2P adapter?
The CN1100E 2P adapter is qualified for HPE ProLiant Gen8/Gen9 rack and tower servers and HPE BladeSystem c-Class enclosures with available PCIe x8 slots.
Does the HP CN1100E 2P adapter support FCoE and iSCSI offload?
Yes. The adapter provides full hardware offload for Fibre Channel over Ethernet (FCoE) and iSCSI, reducing CPU utilization and improving storage network performance.
What are the physical and interface specifications of the CN1100E 2P adapter?
The adapter is a half-height, half-length PCIe 3.0 x8 add-in card with two SFP+ cages supporting standard copper or optical transceivers.
Which operating systems are supported by the HP CN1100E 2P adapter?
Supported OSes include Microsoft Windows Server (2012 R2+), VMware ESXi (6.0+), Red Hat Enterprise Linux (7.x+), SUSE Linux Enterprise Server (12.x+), and select CentOS distributions.
How do I install the HP CN1100E 2P adapter in my server?
Power down the server, insert the adapter into an available PCIe x8 slot, secure it with the retention bracket, power on, then install the latest driver and firmware from HPE Support.
Where can I download drivers and firmware for SKU BK835A?
Visit the HPE Support Center, enter SKU BK835A or CN1100E, and download the latest network driver and firmware packages for your server platform and OS.
Which virtualization platforms are compatible with the CN1100E 2P adapter?
The adapter is certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer and supports guest-OS offloads for optimized virtual machine networking.
How does the HP CN1100E 2P adapter improve network and storage performance?
By consolidating Ethernet and storage traffic on two 10GbE links and offloading processing tasks, it lowers latency, increases throughput and frees server CPU cycles.
What is the power consumption of the CN1100E 2P Converged Network Adapter?
Typical power draw is 7 W under idle conditions and up to 11 W at maximum load, ensuring energy efficiency in dense server deployments.
Is the HP CN1100E 2P adapter RoHS compliant?
Yes. The adapter meets EU RoHS Directive 2011/65/EU for hazardous substance restrictions and is built without lead, mercury or cadmium.
What warranty does the CN1100E 2P adapter include?
When installed in an HPE server, the adapter inherits the server’s limited lifetime warranty. Standalone purchases carry a one-year limited warranty.
How do I configure NIC teaming or multipath failover with this adapter?
Use your OS or hypervisor’s native teaming features (Windows LBFO, Linux bonding, VMware vSphere NIC teaming) or configure HPE FlexFabric multipath policies for high availability.
Can the HP CN1100E 2P adapter be used in non-HPE servers?
The adapter requires an HPE-validated BIOS and firmware stack. Using it in non-HPE servers is not supported and may lead to compatibility issues.
Does the adapter support RDMA or NVMe over Fabrics?
The CN1100E 2P supports RDMA over Converged Ethernet (RoCE) for low-latency data transfers but does not natively support NVMe over Fabrics.
Are there alternate part numbers or cross-references for SKU BK835A?
Alternate HPE part numbers include 661668-B21. It is also referenced as HP CN1100E 2P CNA in HPE QuickSpecs and configuration tools.