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P204i-b controller handled internal drives reliably.
804367-B21
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HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1GB Cache...
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804367-B21
- Description:
- HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1GB Cache) 12G SAS Modular Controller
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- List Price:
$695.00
- Price:
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804367-B21 Overview
804367-B21-HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1GB Cache) 12G SAS Modular Controller is a high-performance RAID controller designed for server and storage expansion applications. This expansion card utilizes a PCIe x4 interface with PCIe 3.0 generation support and is built around the HPE Smart Array controller, offering 12G SAS connectivity and an integrated 1GB cache to accelerate data-intensive workloads while ensuring robust RAID functionality.
Engineered for demanding data center and enterprise environments, this modular controller delivers reliable hardware RAID support and is compatible with operating systems such as Windows, Linux, and VMware ESXi. Its versatile design, which includes options for both low-profile and full-height bracket configurations, makes it ideal for storage expansion initiatives in HPE Gen10 server platforms.
804367-B21 price is $253.00, a 63.6% saving from the Hpe list price of $695.00. 804367-B21 is in stock and available for next-day dispatch. (terms applied)
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804367-B21 Specifications
- Weight
- N/A
- Height
- N/A
- Depth
- N/A
- Width
- N/A
- PCIe Version
- PCIe 3.0
- Product Type
- Expansion Card
- 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
- N/A
- RAID Levels Supported
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60
- Interface
- PCIe x4
- Card Type
- RAID Controller
- Chipset / Controller
- HPE Smart Array
- Product Name
- 804367-B21-HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1GB Cache) 12G SAS Modular Controller
804367-B21 Use Case
High-Density Virtualization for SMB Data Centers
In a mid-sized enterprise running 30+ virtual machines on HPE ProLiant Gen10 servers, the HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1 GB Cache) 12G SAS Modular Controller consolidates VM storage traffic over four internal lanes. This scenario delivers sub-millisecond I/O latency, boosts VM density by up to 25%, and maintains enterprise-grade data protection with mirrored cache. Outcome: higher VM consolidation, predictable performance under peak load, and simplified storage management.
Accelerated OLTP Database Workloads
A financial services firm deploying mission-critical Microsoft SQL Server on dual HPE ProLiant Gen10 hosts leverages the P204i-b SR Gen10 controller to funnel high-speed 12G SAS disk arrays into a RAID 10 configuration. With 1 GB cache and battery-backed write protection, the controller delivers sustained 200 K IOPS for small-block transactions. Outcome: sub-5 ms write response times, 30% uplift in transaction throughput, and guaranteed data integrity during power events.
Fast Backup & Disaster Recovery for Virtualized Environments
An IT service provider implements daily snapshot backups and rapid restores across a cluster of HPE ProLiant Gen10 servers using the P204i-b SR Gen10 controller’s hardware-accelerated RAID features. By integrating with HPE StoreOnce and enabling online RAID level migration, backup windows shrink from 4 hours to under 1 hour and restore time objectives (RTO) drop by 60%. Outcome: minimized downtime, streamlined DR testing, and robust data resiliency for client SLAs.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 804367-B21 |  AXXRMFBU5 |  AK241B |  726740-B21 |  823852-B21 | |
|---|---|---|---|---|---|
| Product Type | Expansion Card | Expansion Card | Expansion Card | Expansion Card | Expansion Card |
| Card Type | RAID Controller | RAID Controller | Storage Controller | RAID Controller | Storage Controller |
| Interface | PCIe x4 | PCIe x8 | PCIe x4 | PCIe x8 | PCIe x8 |
| PCIe Version | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 |
| Chipset / Controller | HPE Smart Array | Intel RAID | N/A | Smart Array P440ar | HPE Smart Array E208i-c |
| Supported Ports | N/A | N/A | SFP+ | N/A | N/A |
| Port Count | N/A | N/A | 1 | N/A | N/A |
| Max Data Rate | N/A | N/A | N/A | N/A | N/A |
| RAID Levels Supported | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 | N/A | N/A | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 |
| Capture Resolution | N/A | N/A | N/A | N/A | N/A |
| Capture Frame Rate | N/A | N/A | N/A | N/A | N/A |
| Low Profile Bracket | Yes | Yes | Yes | Yes | Yes |
| Full Height Bracket | Yes | Yes | Yes | No | Yes |
| Cooling | Passive | Passive | Passive | Passive | Passive |
| Operating System Compatibility | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | Windows / Linux | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi |
| Bus Width | 64-bit | 64-bit | 64-bit | 64-bit | 64-bit |
| Power Requirements | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Use Case | Storage Expansion | Storage Expansion | Storage Expansion | Server Expansion / Storage Expansion | Storage Expansion |
| Product Name | 804367-B21-HPE Smart Array P204i-b SR Gen10 (4 Internal Lanes/1GB Cache) 12G SAS Modular Controller | AXXRMFBU5-Intel RAID Maintenance Free Backup Unit - RAID controller cache data protection module | AK241B-HP 8Gb Simple SAN Connection Kit | 726740-B21-HPE DL360 Gen9 Smart Array P440ar Controller for 2 GPU Configurations | 823852-B21-HPE Smart Array E208i-c SR Gen10 Ctrlr |
| Height | N/A | 1.0 inches | 1.7 inches | 1.0 inches | 1.73 inches |
| Width | N/A | 3.5 inches | 3.3 inches | 4.4 inches | 3.44 inches |
| Depth | N/A | 5.0 inches | 0.8 inches | 7.8 inches | 8.00 inches |
| Weight | N/A | 0.8 lbs | 0.25 lbs | 1.5 lbs | 1.36 lbs |
Reviews & Ratings
H
Hamza Tariq
5
OEM modular controller fit cleanly.
S
Stefan Novak
4
Stable 12G SAS performance.
C
Chris Wallace
4
Good Gen10 option.
M
Marco Venturi
4
Dependable RAID controller.
Questions & Answers
What is the HPE Smart Array P204i-b SR Gen10 controller (SKU 804367-B21)?
The HPE Smart Array P204i-b SR Gen10 (SKU 804367-B21) is an embedded, 12G SAS modular RAID controller with four internal lanes and 1 GB of cache, designed to deliver high-performance storage management in HPE ProLiant Gen10 servers.
What are the key specifications of the P204i-b SR Gen10 controller?
It features a 12 Gb/s SAS interface, four internal lanes, 1 GB of DDR4 ECC cache, hardware RAID acceleration, and full support for HPE ProLiant Gen10 server architectures.
How much onboard cache memory does the P204i-b SR Gen10 include?
The P204i-b SR Gen10 is equipped with 1 GB of DDR4 ECC write-back cache to accelerate write performance and improve overall I/O throughput.
Which drive types and speeds are supported by this controller?
It supports 12 Gb/s and 6 Gb/s SAS drives, as well as 6 Gb/s SATA drives, providing flexibility for mixed-drive environments.
How many internal lanes does the P204i-b SR Gen10 provide?
The controller offers four internal SAS lanes that connect directly to the server backplane to maximize data throughput and simplify cabling.
Which RAID levels are supported by the P204i-b SR Gen10?
It supports RAID 0, 1, 10, 5, and 50 for balanced performance, redundancy, and capacity optimization in enterprise workloads.
Is the P204i-b SR Gen10 compatible with all HPE ProLiant Gen10 servers?
Yes, the P204i-b SR Gen10 is fully compatible with HPE ProLiant DL, ML, and BL Gen10 server models that feature the appropriate SAS mezzanine slot.
How do I install the HPE Smart Array P204i-b SR Gen10 controller?
Power down the server, insert the P204i-b SR Gen10 into the designated SAS mezzanine slot, secure it, power on, then configure controllers and virtual drives via HPE Smart Storage Administrator.
Can I upgrade the cache memory on this controller?
No, the 1 GB DDR4 ECC cache on the P204i-b SR Gen10 is fixed and not user-upgradeable.
How does the P204i-b SR Gen10 improve storage performance?
By offloading RAID calculations to dedicated hardware and leveraging 1 GB of cache, it reduces CPU load, accelerates writes, and boosts read/write throughput on SAS arrays.
Does the P204i-b SR Gen10 support hot-swappable drives?
Yes, when installed in a compatible HPE backplane, it supports hot-plug SAS and SATA drives, allowing drive replacement without server downtime.
What management tools are available for this controller?
Use HPE Smart Storage Administrator (SSA) for GUI management, the HPE Command-Line Interface (CLI) for scripting, or HPE Integrated Lights-Out (iLO) for remote monitoring.
What are the form factor and power requirements of the P204i-b SR Gen10?
It is a half-height, half-length mezzanine card consuming less than 10 W of power, designed to fit standard HPE ProLiant Gen10 server chassis.
How does the P204i-b SR Gen10 enhance data protection?
By supporting advanced RAID levels, battery-backed write cache protection, and online array roaming, it minimizes data loss risks and simplifies maintenance.
What warranty and support options are available for SKU 804367-B21?
HPE offers a one-year limited warranty with options to extend coverage via HPE Support Care Packs for up to five years of global hardware support.
Where can I find firmware and driver updates for the P204i-b SR Gen10?
Download the latest firmware and drivers from the HPE Support Center by searching for SKU 804367-B21 under the ProLiant Gen10 storage controllers section.