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P240NR controller worked reliably for OS drives.
758801-B21
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HPE SMART ARRAY P240NR/1GB CONTROLLER
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758801-B21
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- HPE SMART ARRAY P240NR/1GB CONTROLLER
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758801-B21 Overview
758801-B21-HPE SMART ARRAY P240NR/1GB CONTROLLER is a high-performance storage controller designed to deliver robust hardware RAID functionality for enterprise server environments. Engineered as an expansion card, this RAID controller includes 1GB cache memory and is optimized for data protection and enhanced I/O performance, making it an ideal solution for high-demand storage expansion and server enhancement use cases.
This card features a PCI Express interface – specifically a PCIe x8 slot with PCIe 3.0 technology – and is purpose-built to support multiple RAID levels (RAID 0, RAID 1, RAID 10, and JBOD) across SAS and SATA drive configurations. Compatible with major operating systems such as Windows, Linux, and VMware ESXi, the controller is offered in both low-profile and full-height bracket configurations and provides passive cooling in order to maintain a streamlined design in modern data center and server deployments.
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758801-B21 Specifications
- Height
- 1.7 inches
- Depth
- 7.1 inches
- Width
- 3.7 inches
- Weight
- 0.9 lbs
- 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
- Card Type
- Storage Controller
- Operating System Compatibility
- Windows / Linux / VMware ESXi
- Port Count
- 8
- Chipset / Controller
- HPE Smart Array P240 Controller
- RAID Levels Supported
- RAID 0 / RAID 1 / RAID 10 / JBOD
- Product Name
- HPE Smart Array P240NR/1GB Controller
758801-B21 Use Case
Accelerating Virtual Machine Performance in Enterprise Data Centers
Scenario: A global enterprise deploys VMware vSphere clusters on HPE ProLiant Gen10 servers. Integrating the 758801-B21 Smart Array P240NR/1GB Controller provides a dedicated 1 GB flash-backed write cache and high-speed SAS connectivity. Outcome: VM boot storms are reduced by 40%, random I/O performance improves by 50%, and sub-millisecond latency ensures consistent 99.999% SLA compliance.
High-Performance SQL Server Transactions for Retail Point-of-Sale Networks
Scenario: A national retail chain operates hundreds of PoS terminals backed by on-premises SQL Server on HPE ProLiant servers. The P240NR/1GB Controller’s non-volatile write cache and optimized read/write algorithms minimize latency under heavy transactional loads. Outcome: Query response times drop by 30%, transaction availability reaches 99.9%, and peak-season bottlenecks are eliminated.
Optimizing Hyper-Converged Infrastructure Scalability and Resilience
Scenario: An IT services provider builds a VMware vSAN cluster with HPE ProLiant nodes equipped with the 758801-B21 P240NR/1GB Controller. The controller delivers consistent cache acceleration across distributed storage, speeding rebuilds and protecting against drive failures. Outcome: Data rebuild times accelerate by 25%, cluster resilience is enhanced with uninterrupted I/O under drive loss, and performance scales linearly as nodes are added.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 758801-B21 |  766205-B21 |  830824-B21 |  Q0L12A |  QW972A | |
|---|---|---|---|---|---|
| Product Type | Expansion Card | Expansion Card | Expansion Card | Expansion Card | Expansion Card |
| Card Type | Storage Controller | RAID Controller | Storage Controller | Storage Controller | Storage Controller |
| Interface | PCIe x8 | PCIe x8 | PCIe x8 | 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 P240 Controller | HPE Smart Array P840 | HPE Smart Array P408i-p SR | SN1600E | SN1000Q |
| Supported Ports | N/A | N/A | N/A | SFP+ | SFP+ |
| Port Count | 8 | 8 | N/A | 2 | 2 |
| Max Data Rate | N/A | N/A | N/A | 10Gbps | N/A |
| RAID Levels Supported | RAID 0 / RAID 1 / RAID 10 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 | N/A | N/A |
| 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 | No | No |
| Full Height Bracket | Yes | No | No | Yes | Yes |
| Cooling | Passive | Passive | Passive | Passive | Passive |
| Operating System Compatibility | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | Windows / Linux / VMware ESXi | 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 | Storage Expansion | Storage Expansion |
| Product Name | HPE Smart Array P240NR/1GB Controller | 766205-B21-HPE DL360 Gen9 Smart Array P840 SAS Card with Cable Kit | 830824-B21-SMART ARRAY P408I-P SR GEN10 CTRLR PL=SI | Q0L12A-SN1600E 32GB 2P FC HBA NO DEAL REG PL-SH | QW972A-HP STOREFABRIC SN1000Q 16GB 2PORT PCIE FIBRE CHANNEL HBA |
| Height | 1.7 inches | 0.75 inches | 0.55 inches | N/A | N/A |
| Width | 3.7 inches | 4.50 inches | 3.3 inches | N/A | N/A |
| Depth | 7.1 inches | 8.00 inches | 7.9 inches | N/A | N/A |
| Weight | 0.9 lbs | 1.2 lbs | 1.2 lbs | N/A | N/A |
Reviews & Ratings
B
Bilal Hassan
5
Easy install and setup.
N
Niels Bakker
5
Predictable performance.
J
James Porter
4
Good entry controller.
V
Viktor Horvat
4
Stable and dependable.
Questions & Answers
What is the HPE Smart Array P240nr/1GB Controller (SKU 758801-B21)?
The HPE Smart Array P240nr/1GB Controller is a PCIe RAID adapter with 1 GB cache designed for HPE ProLiant servers, offering hardware RAID levels 0, 1, 5, 6 and 10.
Which HPE servers are compatible with the P240nr/1GB Controller?
The P240nr/1GB Controller is compatible with select HPE ProLiant Gen9 and Gen10 rack and tower servers; check the HPE QuickSpecs for an up-to-date compatibility matrix.
What RAID levels does the P240nr/1GB support?
It supports RAID 0, 1, 5, 6 and 10, enabling a balance of performance, capacity and data protection.
How much cache memory does the P240nr/1GB Controller include?
This controller includes 1 GB of DDR3 write-back cache with flash-backed protection to optimize I/O performance.
What interface does the P240nr/1GB Controller use?
The adapter uses a PCIe 3.0 x8 host interface and connects to server drive backplanes via an internal SAS SFF-8087 port.
Does the P240nr/1GB require a battery or module for cache protection?
No battery is required; on-board NAND flash provides non-volatile cache protection for up to 72 hours of data retention.
How many drives can I connect to this RAID controller?
You can attach up to 8 SAS or SATA drives per controller, expandable with HBA port expanders as supported.
Can the P240nr/1GB Controller manage NVMe drives?
No. The P240nr/1GB is limited to SAS and SATA drives and does not support NVMe devices.
How do I install the HPE Smart Array P240nr/1GB Controller?
Power down the server, insert the controller into an available PCIe x8 slot, secure it, then power up and install the latest HPE Smart Storage Administrator drivers.
Where can I download firmware and drivers for the P240nr/1GB?
Visit the HPE Support Center, search SKU 758801-B21, and download the latest firmware and driver packages compatible with your OS.
What performance improvements does the P240nr/1GB offer?
With hardware RAID offload and 1 GB of write-back cache, you’ll see up to 50% faster random I/O throughput compared to software RAID.
Is the P240nr/1GB Controller hot-plug capable?
The controller itself is not hot-swappable; however, it supports hot-plug SAS/SATA drives in compatible server backplanes.
What diagnostic and management tools are available?
Use the HPE Smart Storage Administrator (SSA) for GUI configuration and the HPE Array Configuration Utility CLI for scripting and automation.
What warranty does HPE offer on this controller?
HPE provides a standard three-year limited warranty with parts replacement and 24×7 support; extended coverage is available separately.
Can I upgrade from P440/P840 controllers to the P240nr/1GB?
No. The P240nr/1GB is an entry-level controller and not an upward-compatible replacement for higher-end P440 or P840 models.
Where can I purchase the genuine HPE Smart Array P240nr/1GB Controller?
Order through authorized HPE resellers or the HPE official store using SKU 758801-B21 to ensure genuine parts and warranty coverage.