United States$5,000,000+
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O
Oliver Brandt
5
Smart Array controller delivered strong RAID performance.
726897-B21
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HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controlle...
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726897-B21
- Description:
- HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller
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726897-B21 Overview
726897-B21-HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller is a high-performance storage controller designed for enterprise server environments. This expansion card delivers reliable hardware RAID management and storage expansion capabilities with a 4GB flash-backed write cache, optimized for demanding data workloads.
Engineered as an internal RAID controller, it utilizes a PCIe interface—typically in an x8 slot—alongside support for 12Gb SAS connections through its dual-port configuration. Built to meet the needs of enhanced server performance, this controller is compatible with multiple operating systems including Windows, Linux, and VMware ESXi, features passive cooling, and is delivered in a full height bracket design for robust installation in standard server chassis.
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726897-B21 Specifications
- Weight
- N/A
- Height
- N/A
- Depth
- N/A
- Width
- N/A
- PCIe Version
- PCIe 3.0
- Product Type
- Expansion Card
- Interface
- PCIe x8
- Supported Ports
- N/A
- Port Count
- 2
- Max Data Rate
- N/A
- Capture Resolution
- N/A
- Capture Frame Rate
- N/A
- Full Height Bracket
- Yes
- Cooling
- Passive
- Bus Width
- 64-bit
- Power Requirements
- 3.3V
- Use Case
- Storage Expansion
- Card Type
- Storage Controller
- Low Profile Bracket
- No
- Operating System Compatibility
- Windows / Linux / VMware ESXi
- RAID Levels Supported
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD
- Chipset / Controller
- N/A
- Product Name
- 726897-B21-HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller
726897-B21 Use Case
Enterprise Database Consolidation with 726897-B21 HPE Smart Array P840
In a global financial services data center, IT architects deploy the 726897-B21 HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller to consolidate multiple high-transaction Oracle and MS SQL instances onto a single rack-scale server. By leveraging 12Gb/s SAS throughput and advanced RAID levels, they achieve 1.2M+ IOPS, eliminate storage bottlenecks, and ensure sub-millisecond latency under peak loads. Outcome: 45% lower TCO, 99.99% database availability, and simplified capacity planning across geographies.
Scale-Out Virtualization for Cloud Service Providers
A leading cloud hosting provider integrates the HPE 726897-B21 Smart Array P840 controller into its HPE ProLiant server fleet to support dense VM consolidation on VMware vSphere and Microsoft Hyper-V. The 12Gb/s dual SAS ports and 4GB flash-back cache deliver predictable performance across hundreds of virtual machines, while HPE Smart Storage Administrator streamlines storage provisioning. Outcome: 60% increased VM density per chassis, 30% faster VM boot times, and seamless on-demand scaling with zero service disruptions.
High-Performance Computing (HPC) and Big Data Analytics
A scientific research lab uses the 726897-B21 HPE Smart Array P840 controller to power its HPC cluster for real-time genomics analysis and big data workloads. The controller’s hardware RAID 6, tiered caching, and multi-port SAS architecture provide ultra-low latency and high throughput for large-scale data sets. Outcome: 3× faster data ingestion, reliable parallel processing at petabyte scale, and enhanced fault tolerance for continuous 24/7 computation.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 726897-B21 |  726782-B21 |  761873-B21 |  873373-B21 |  H6G86A | |
|---|---|---|---|---|---|
| Product Type | Expansion Card | Expansion Card | Expansion Card | ||
| Card Type | Storage Controller | Storage Controller | Storage Controller | ||
| Interface | PCIe x8 | N/A | PCIe x4 | ||
| PCIe Version | PCIe 3.0 | N/A | PCIe 3.0 | ||
| Chipset / Controller | N/A | HPE Smart Array P741 | HPE NVMe Controller | ||
| Supported Ports | N/A | N/A | N/A | ||
| Port Count | 2 | 4 | N/A | ||
| Max Data Rate | N/A | N/A | N/A | ||
| RAID Levels Supported | 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 50 / RAID 60 | N/A | ||
| Capture Resolution | N/A | N/A | N/A | ||
| Capture Frame Rate | N/A | N/A | N/A | ||
| Low Profile Bracket | No | No | No | ||
| Full Height Bracket | Yes | No | Yes | ||
| Cooling | Passive | Passive | Passive | ||
| Operating System Compatibility | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | ||
| Bus Width | 64-bit | N/A | 64-bit | ||
| Power Requirements | 3.3V | N/A | 3.3V | ||
| Use Case | Storage Expansion | Storage Expansion | Storage Expansion | ||
| Product Name | 726897-B21-HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller | 726782-B21-HPE Smart Array P741m/2GB FBWC 12Gb 4-ports Ext Mezzanine SAS Controller | 873373-B21-HPE Gen10 Purley NVMe FIO Setting | ||
| Height | N/A | N/A | 1.0 inches | ||
| Width | N/A | N/A | 3.5 inches | ||
| Depth | N/A | N/A | 7.5 inches | ||
| Weight | N/A | N/A | 0.5 lbs |
Reviews & Ratings
G
Giorgio Fontana
5
Cache improved write speeds significantly.
M
Matthew Reed
5
OEM controller with stable drivers.
H
Henning Larsen
5
Reliable under heavy I O loads.
R
Rafael Pinto
5
Excellent enterprise controller.
Questions & Answers
What is the HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller (SKU: 726897-B21)?
The HPE Smart Array P840/4GB FBWC 12Gb 2-ports Int SAS Controller (SKU: 726897-B21) is an enterprise-grade hardware RAID controller that delivers high-performance data protection with two integrated 12Gb/s SAS ports and 4GB flash-backed cache.
How many SAS ports does the HPE P840 controller feature?
The HPE P840 controller features two internal 12Gb/s SAS ports for direct connection to SAS or SATA drive enclosures, ensuring high-speed data transfer and low latency.
Which RAID levels are supported by the HPE Smart Array P840 controller?
The HPE Smart Array P840 supports RAID 0, 1, 10, 5, 50, 6 and 60, providing flexible data protection and performance options for diverse workloads.
What is FBWC and how does the 4GB FBWC improve performance?
Flash-Backed Write Cache (FBWC) uses supercapacitors and NAND flash to protect cached write data during power loss, delivering faster write performance and enhanced data integrity.
Which HPE servers are compatible with the P840/4GB FBWC controller?
The P840/4GB FBWC controller is compatible with HPE ProLiant Gen9 and Gen10 servers, including DL380, DL360, ML350 and BL460 rack, tower and blade platforms.
How many drives can the P840 controller manage?
When paired with SAS expanders, the P840 controller can manage up to 240 SAS or SATA drives, providing massive storage scalability in large deployments.
Is an additional HBA required to use the HPE P840 controller?
No additional Host Bus Adapter (HBA) is required; the P840 functions as a fully integrated hardware RAID controller with SAS connectivity built-in.
How do I install the HPE Smart Array P840 in my server?
To install, power down the server, insert the P840 into a free PCIe Gen3 slot, secure it, connect SAS cables to drive enclosures and power on the server.
How can I configure RAID arrays on the HPE P840 controller?
Use the HPE Smart Storage Administrator (SSA) via the server’s BIOS interface or the operating system utility to create, modify and manage RAID arrays.
Can I update the firmware on the HPE P840 controller?
Yes. Download the latest firmware from the HPE Support Center and apply it using HPE Smart Storage Administrator or Service Pack for ProLiant (SPP).
What is the cache memory size on the HPE P840 and is it upgradeable?
The HPE P840 comes with 4GB of DDR4 FBWC, which is factory-installed and not field-upgradeable; cache capacity can only be increased by replacing the entire controller module.
Does the P840 controller support both SSDs and HDDs?
Yes, the P840 supports both SAS and SATA SSDs/HDDs, operating at up to 12Gb/s for SAS and 6Gb/s for SATA devices for maximum versatility.
How does the HPE P840 controller enhance data resilience?
By offloading RAID parity calculations, offering advanced RAID levels and protecting cache via FBWC, the P840 ensures high data availability and rapid rebuilds.
What warranty coverage is provided with the HPE Smart Array P840 controller?
The HPE Smart Array P840 controller includes a standard 3-year limited warranty, with optional extensions available through HPE Care Pack services.
How does the P840 compare to the HPE Smart Array P822 controller?
Compared to the P822, the P840 delivers double the per-port throughput (12Gb/s vs 6Gb/s), higher cache durability with FBWC and expanded RAID capabilities.
What are the typical power consumption figures for the HPE P840 controller?
The HPE P840 controller typically draws 8W at idle and up to 15W under load, though actual consumption varies with server configuration and drive activity.