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P246br controller provided stable SAS performance.
726793-B21
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HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Int SAS Control...
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726793-B21
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- HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Int SAS Controller
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726793-B21 Overview
726793-B21-HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Int SAS Controller is an internal RAID controller expansion card engineered for high-performance storage enhancement in servers. It is built to integrate seamlessly into server architectures using a PCIe interface and adheres to PCIe 3.0 standards, offering a robust solution for managing multiple SAS storage devices with a dedicated 1GB flash-backed write cache.
This controller leverages the HPE Smart Array P246br chipset to deliver advanced hardware RAID functionalities—including support for RAID levels 0, 1, 5, 6, 10, 50, 60, and JBOD—across 4 integrated SAS ports operating at 12Gb speeds. Designed for server expansion and storage optimization, it comes with both low-profile and full-height bracket options, operates with passive cooling, and is compatible with Windows, Linux, and VMware ESXi.
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726793-B21 Specifications
- Height
- 1.73 inches
- Weight
- 2.1 lbs
- Depth
- 9.84 inches
- Width
- 4.37 inches
- PCIe Version
- PCIe 3.0
- Product Type
- Expansion Card
- Interface
- PCIe x8
- Supported Ports
- N/A
- Max Data Rate
- N/A
- Capture Resolution
- N/A
- Capture Frame Rate
- N/A
- Low Profile Bracket
- Yes
- Full Height Bracket
- Yes
- Cooling
- Passive
- Bus Width
- 64-bit
- Power Requirements
- 3.3V
- Use Case
- Storage Expansion
- Operating System Compatibility
- Windows / Linux / VMware ESXi
- Port Count
- 4
- RAID Levels Supported
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD
- Card Type
- RAID Controller
- Chipset / Controller
- HPE Smart Array P246br
- Product Name
- 726793-B21-HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Int SAS Controller
726793-B21 Use Case
High-Density Virtualization Acceleration with HPE Smart Array P246br
In VMware or Hyper-V datacenters consolidating 100+ virtual machines per host, the HPE Smart Array P246br’s four 12 Gb/s internal SAS ports and 1 GB FBWC dramatically boost I/O throughput. By configuring RAID 10 for critical VM disks, IT administrators achieve up to 2× higher sustained IOPS and sub-1 ms latency under peak loads. The result is increased VM density, reduced storage bottlenecks, and a 30% improvement in TCO for large-scale virtualization deployments.
Enterprise Database Performance Optimization with 12 Gb/s SAS Controller
For SQL and NoSQL databases demanding sub-millisecond transactions, the HPE Smart Array P246br leverages its 12 Gb/s SAS bandwidth and battery-backed 1 GB cache to deliver consistent high throughput. Deployed in Oracle RAC or Microsoft SQL clusters, it accelerates random reads/writes by 40%, ensures data integrity during power loss, and minimizes lock contention. This translates into faster query response, seamless scaling under heavy OLTP workloads, and up to 25% lower latency for data-intensive applications.
Reliable Enterprise File Services & Data Protection Solution
In high-availability file server environments and SAN/NAS back-ends, the HPE Smart Array P246br provides robust RAID management for critical data sets. With support for RAID 5, 6, 10 and online spare configurations, plus 1 GB FBWC safeguarding write cache, organizations achieve 99.999% availability and accelerated rebuild times by 50%. The controller’s seamless integration with HPE InfoSight ensures proactive monitoring and reduces unplanned downtime, delivering business-critical file services with enhanced resilience and simplified storage administration.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 726793-B21 |  726911-B21 |  758801-B21 |  H6G45A |  710608-B21 | |
|---|---|---|---|---|---|
| Product Type | Expansion Card | Expansion Card | Expansion Card | ||
| Card Type | RAID Controller | Storage Controller | Storage Controller | ||
| Interface | PCIe x8 | PCIe x8 | PCIe x8 | ||
| PCIe Version | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 | ||
| Chipset / Controller | HPE Smart Array P246br | HPE Smart Array P240 Controller | QMH2672 | ||
| Supported Ports | N/A | N/A | SFP+ | ||
| Port Count | 4 | 8 | 2 | ||
| 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 10 / JBOD | N/A | ||
| Capture Resolution | N/A | N/A | N/A | ||
| Capture Frame Rate | N/A | N/A | N/A | ||
| Low Profile Bracket | Yes | Yes | No | ||
| Full Height Bracket | Yes | Yes | Yes | ||
| Cooling | Passive | Passive | Passive | ||
| Operating System Compatibility | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | ||
| Bus Width | 64-bit | 64-bit | 64-bit | ||
| Power Requirements | 3.3V | 3.3V | 3.3V | ||
| Use Case | Storage Expansion | Storage Expansion | Storage Expansion | ||
| Product Name | 726793-B21-HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Int SAS Controller | HPE Smart Array P240NR/1GB Controller | 710608-B21-HP QMH2672 16GB FC HBA 1YR IMS WARRANTY STANDARD | ||
| Height | 1.73 inches | 1.7 inches | N/A | ||
| Width | 4.37 inches | 3.7 inches | N/A | ||
| Depth | 9.84 inches | 7.1 inches | N/A | ||
| Weight | 2.1 lbs | 0.9 lbs | N/A |
Reviews & Ratings
A
Ali Raza
5
OEM firmware recognized instantly.
M
Matias Korhonen
4
Cache improved throughput noticeably.
S
Sean Miller
5
Good internal SAS controller.
R
Roberto Costa
5
Reliable Smart Array card.
Questions & Answers
What is the HPE Smart Array P246br/1GB FBWC 12Gb 4-ports Internal SAS Controller?
The HPE Smart Array P246br is a hardware RAID controller featuring four internal 12Gb/s SAS ports, a PCIe Gen3 x8 interface and 1GB of Flash-Backed Write Cache to deliver enterprise-grade storage acceleration and data protection.
Which RAID levels does the HPE Smart Array P246br support?
It supports RAID levels 0, 1, 1+0, 5, 6, 50 and 60, providing flexible configurations for performance, capacity optimization and redundancy.
How much cache memory does the P246br controller have?
The controller includes 1GB of Flash-Backed Write Cache (FBWC), ensuring write data is preserved during power loss and accelerating both read and write operations.
What interface and throughput does the P246br provide?
It delivers four internal 12Gb/s SAS ports with a PCIe Gen3 x8 host interface, offering up to 6.3GB/s aggregate throughput to attached drives.
Is the P246br compatible with both SAS and SATA drives?
Yes, the P246br supports SAS and SATA enterprise-class SSDs and HDDs, ensuring broad compatibility with 2.5-inch and 3.5-inch storage devices.
Which HPE servers support the P246br controller?
It is compatible with HPE ProLiant Gen10 and Gen11 DL, ML and BL series servers; refer to the HPE QuickSpecs for a detailed compatibility matrix.
What is Flash-Backed Write Cache (FBWC) and why is it important?
FBWC combines high-speed DRAM caching with flash backup to preserve cached write data on power loss, preventing data corruption and optimizing write performance.
How do I install the HPE Smart Array P246br controller?
Install the P246br by seating it into an available PCIe Gen3 x8 slot, securing the retention latch, connecting mini-SAS cables to the backplane and powering on the server.
Which tools are used to manage the P246br RAID controller?
Management is provided through HPE Smart Storage Administrator (SSA) or HPE Intelligent Provisioning, offering both GUI and CLI options for configuration and monitoring.
How can I update the firmware on the P246br controller?
Use HPE Smart Update Manager in the Service Pack for ProLiant (SPP) or update directly via HPE SSA for validated, streamlined firmware deployment.
Does the P246br support online RAID level migration?
Yes, you can perform online RAID level migration without data loss or system downtime by using HPE SSA to transition between supported RAID levels.
What warranty comes with the HPE Smart Array P246br controller?
The P246br includes a standard three-year limited warranty, with optional HPE Care Pack extensions available for additional coverage.
Can the P246br be used in non-HPE servers?
While the controller can operate in any server with a compatible PCIe Gen3 x8 slot and SAS backplane, full support and warranty coverage require installation in HPE-certified systems.
How do I monitor cache battery health on the P246br?
Battery and cache health are monitored automatically via HPE SSA and Integrated Lights-Out (iLO), which generate alerts for battery status, charge level and replacement needs.
Does the P246br support both SSD and HDD drives?
Yes, the controller manages both enterprise-class SSDs and HDDs, and can address up to 240 drives per controller when paired with appropriate expanders or backplanes.
What performance can I expect from the P246br controller?
Under optimal conditions, the P246br can deliver up to 800K IOPS and sustained throughput exceeding 3GB/s, depending on drive type, RAID level and system configuration.