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Mitchell Young
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Write-intensive SAS SSD delivers strong endurance.
B9F51B
HPE 400GB SAS 12G WI SFF ST DS SSD
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B9F51B
- Description:
- HPE 400GB SAS 12G WI SFF ST DS SSD
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B9F51B Overview
B9F51B is a high-performance HDD engineered for demanding environments, featuring a robust 3.5-inch form factor and a SATA III interface. It operates at a spindle speed of 7200 RPM and offers a 4 TB capacity paired with a 256 MB buffer, making it well-suited for applications requiring high data throughput and reliability. Designed to support an annual workload rating of 180 TB/yr, this drive meets the needs of both enterprise and advanced desktop deployments.
With advanced features such as a helium-sealed design for improved thermal efficiency, integrated vibration protection, and dual actuator technology, the B9F51B is optimized for continuous 24/7 operation with an MTBF of 1,000,000 hours. Its efficient power consumption in both read/write (8 Watts) and idle (4 Watts) states, along with its reliability and durability, makes it an excellent choice for data centers, NAS systems, surveillance setups, and high-performance desktop environments.
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B9F51B Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance / Enterprise Storage
- Interface
- SATA III
- Form Factor
- 3.5-inch
- Storage Capacity
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 180 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 4 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- B9F51B Enterprise HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 8.74 inches
- Weight
- 3.3 lbs
B9F51B Use Case
Accelerating VMware Virtualization with B9F51B-HPE 400GB SAS 12G WI SFF ST DS SSD
In enterprise VMware vSphere clusters running high-density virtual machines, deploying the B9F51B-HPE 400GB SAS 12G WI SFF ST DS SSD delivers ultra-low latency and industry-leading IOPS. Organizations achieve up to 40% faster VM boot and provisioning times, increase VM density per host, and consistently meet stringent performance SLAs for critical production workloads.
Optimizing OLTP Database Transactions in Financial Services
Financial trading platforms and online banking systems require predictable, high-throughput storage for Oracle and SQL Server workloads. Integrating the B9F51B-HPE 400GB SAS 12G WI SFF ST DS SSD ensures sub-millisecond latency, sustained high IOPS, and deterministic transaction performance. Customers gain 30% faster end-of-day processing, eliminate query bottlenecks, and adhere to strict regulatory SLAs.
Enhancing Virtual Desktop Infrastructure (VDI) Responsiveness
Large enterprises deploying Citrix or VMware Horizon VDI environments leverage the B9F51B-HPE 400GB SAS 12G WI SFF ST DS SSD to accelerate user profile loads and application launches. This SSD cuts logon storm impact, reduces boot times by 50%, and supports thousands of concurrent desktops with minimal storage contention—driving higher end-user satisfaction and reducing IT operational overhead.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| B9F51B |  Q0F40A |  P09090-B21 |  Q6M13A |  764892-B21 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Server | Desktop / Server / NAS / Surveillance |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 4 TB | 4 TB | 10 TB | 10 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 128 MB | 256 MB | 256 MB | 256 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 W | 8 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 4 Watts | 5 W | 5 Watts | 5 Watts | 4.5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | No | AES 256-bit |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Advanced Features | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | B9F51B Enterprise HDD | Q0F40A 4TB Enterprise HDD | P09090-B21 Enterprise HDD | Q6M13A High-Performance Enterprise HDD | 764892-B21 Enterprise HDD |
| Height | 1.03 inches | 1 in | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.79 inches | 5.79 in | 4.00 inches | 5.79 inches | 5.79 inches |
| Depth | 8.74 inches | 4 in | 5.78 inches | 4.00 inches | 4.02 inches |
| Weight | 3.3 lbs | 1.5 lbs | 2.2 lbs | 2.0 lbs | 2.0 lbs |
Reviews & Ratings
S
Sadia Zafar
4
Reliable performance for write-heavy tasks.
R
Rostislav Kolar
4
Consistent latency under sustained writes.
A
Ahsan Pasha
4
Good SSD for demanding enterprise workloads.
V
Victor Lane
5
Meets expectations for WI SAS SSDs.
Questions & Answers
What interface does the HPE 400GB SAS 12G WI SFF ST DS SSD (SKU: B9F51B) use?
The HPE B9F51B SSD uses a 12Gb/s SAS interface, delivering high throughput and low latency for enterprise workloads.
What is the storage capacity of the HPE B9F51B SSD?
This model provides 400 GB of usable flash storage, ideal for demanding applications and virtualization environments.
What form factor does the HPE 400GB SAS SSD B9F51B support?
It comes in a 2.5-inch small form factor (SFF), compatible with standard SAS drive bays in HPE ProLiant, Apollo, and Synergy servers.
Is the HPE B9F51B SSD hot-pluggable?
Yes. This SSD supports hot-plug and hot-swap operation, enabling drive replacement without system downtime.
What performance can I expect from this 400 GB SAS SSD?
It delivers up to 175,000 random read IOPS and 30,000 random write IOPS, with sequential throughput up to 2.1 GB/s.
What endurance rating does the HPE 400GB SAS WI SSD offer?
Engineered for write-intensive workloads, it supports up to 10 drive writes per day (DWPD) over a 5-year lifespan.
Which HPE servers and controllers are compatible with the B9F51B SSD?
This SSD is validated for HPE ProLiant DL/ML/BL Series, Apollo, and Synergy platforms, and certified on HPE Smart Array and Smart HBA controllers.
How do I install the HPE 400GB SAS SSD into my server?
Slide the SSD into an available SFF SAS bay or drive caddy, secure it, then configure it via HPE Smart Storage Administrator.
What warranty coverage comes with the HPE B9F51B SSD?
It includes a 5-year limited warranty backed by HPE, covering defects and supporting firmware updates.
What is the MTBF rating of this HPE 400GB SAS SSD?
Manufactured for reliability, the SSD has a mean time between failures (MTBF) of 2 million hours.
What are the ideal use cases for the HPE 400 GB SAS WI SSD?
This SSD excels in virtualization, databases, OLTP, analytics, and other write-intensive enterprise applications.
Can I use the B9F51B SSD as a boot drive?
Yes. Its high performance and enterprise endurance make it fully suitable for OS boot volumes and critical applications.
How can I monitor the health of the HPE 400GB SAS SSD?
Use HPE Smart Storage Administrator or HPE OneView to view SMART attributes, drive wear indicators, and error logs.
Does the HPE B9F51B SSD support hardware encryption?
Yes. It offers optional self-encrypting drive (SED) capabilities for secure data protection without performance impact.
How does this write-intensive SSD compare to a read-optimized model?
This WI SSD is tuned for heavy write workloads with higher endurance, while read-optimized models emphasize maximum read IOPS.
What do the abbreviations ST and DS mean in the SKU B9F51B?
ST denotes single-port topology and DS indicates dual-port SAS connectivity for redundancy and high availability.