United States$5,000,000+
Inventory Delivered By
I
Isaac Morton
5
Write-intensive SATA SSD performs reliably under load.
804665-B21
HPE 400GB SATA 6G Write Intensive SFF (2.5in) SC 3yr Warrant...
FEATURED DEAL
Name:
804665-B21
- Description:
- HPE 400GB SATA 6G Write Intensive SFF (2.5in) SC 3yr Warranty SSD For Use with Gen8 Servers and Beyond
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Hpe
- Condition:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
TRUSTED, TRIED, PROVEN
Officially Accredited
& Verified By
Next-Gen IT
Solutions Powered By
804665-B21 Overview
804665-B21 is a high-performance HDD engineered for demanding enterprise applications, featuring a 3.5-inch form factor and a robust SATA III interface. It operates at 7200 RPM, offers a generous 4 TB storage capacity with a 256 MB cache, and is rated for an annual workload of 550 TB/yr, ensuring dependable reliability in environments where rated operational hours are critical.
The drive is optimized for a wide range of use cases including data centers, desktops, NAS, and surveillance systems. With advanced features such as helium-sealing, built-in vibration protection, and a dual actuator setup, 804665-B21 delivers efficient power consumption (9 Watts read/write and 7 Watts idle) while maintaining an operating temperature of 5–55°C, making it an ideal choice for high-demand, continuous-use scenarios.
804665-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 804665-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
804665-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance
- 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
- 550 TB/yr
- Power Consumption (Read/Write)
- 9 Watts
- Power Consumption (Idle)
- 7 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–55°C
- Product Name
- 804665-B21 Enterprise HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.01 inches
- Weight
- 1.4 lbs
804665-B21 Use Case
High-Velocity Transactional Databases in Retail Environments
Deploy the 804665-B21 HPE 400GB SATA 6G Write Intensive SFF (2.5in) SC 3yr Warranty SSD in Gen8 servers powering point-of-sale and inventory management databases. By leveraging sustained write IOPS of up to 27K and sub-millisecond latency, retail enterprises achieve real-time stock updates, accelerate checkout throughput by 45%, and maintain 99.99% transaction integrity—delivering seamless customer experiences during peak shopping periods.
Enterprise Virtual Desktop Infrastructure (VDI) Performance Boost
Integrate the 804665-B21 HPE 400GB SATA 6G Write Intensive SSD into Gen8-based hypervisor clusters supporting 1,000+ simultaneous virtual desktops. The high endurance (DWPD 3.65) and consistent write performance reduce boot-storm times by 60%, enable rapid profile loading, and cut VDI storage latency by 80 ms—resulting in a more responsive user environment, simplified IT management, and a 30% reduction in storage TCO.
Real-Time Log Aggregation and Analytics for DevOps Pipelines
Use the 804665-B21 HPE 400GB SATA 6G Write Intensive SSD in Gen8 server arrays dedicated to centralized log ingestion and analytics. Thanks to its write-optimized architecture and sustained 6 Gb/s throughput, DevOps teams process high-volume application logs in real time, accelerating root-cause analysis by 50%, improving anomaly detection, and ensuring compliance reporting meets sub-minute SLAs—boosting operational agility and reducing incident MTTR.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 804665-B21 |  846432-B21 |  804625-B21 |  P00896-B21 |  P04527-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SAS 12Gb/s | 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 | 6 TB | 4 TB | 4 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Average Latency | N/A | N/A | N/A | N/A | 4.16 ms |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 9 Watts | 10 Watts | 7.2 Watts | 7.5 Watts | 8.0 Watts |
| Power Consumption (Idle) | 7 Watts | 5 Watts | 4.5 Watts | 4.5 Watts | 6.0 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | 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 | 5–55°C | 5–55°C | 5–60°C | 5–60°C | 0–60°C |
| Product Name | 804665-B21 Enterprise HDD | 846432-B21 | 804625-B21 Enterprise HDD | P00896-B21 Enterprise HDD | P04527-B21 Enterprise Helium-Sealed 4TB HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.00 inches |
| Width | 5.79 inches | 5.78 inches | 5.79 inches | 5.79 inches | 5.80 inches |
| Depth | 4.01 inches | 7.36 inches | 4.00 inches | 4.00 inches | 4.00 inches |
| Weight | 1.4 lbs | 2.1 lbs | 2.2 lbs | 2.50 lbs | 1.80 lbs |
Reviews & Ratings
M
Mina Paracha
4
Good endurance for write-heavy tasks.
T
Tommaso Ricci
5
Predictable performance and stable firmware.
S
Salman Qayyum
5
Easy deployment and consistent results.
B
Brian Keller
5
Solid WI SSD for enterprise servers.
Questions & Answers
What are the key features of the HPE 400GB SATA 6G Write Intensive SFF SSD (804665-B21)?
The HPE 400GB SATA 6G Write Intensive SFF SSD delivers 6 Gb/s SATA interface speeds, up to 535 MB/s sequential read, 450 MB/s sequential write, 10 DWPD endurance, and a 3-year warranty for Gen8 servers and beyond.
Which HPE servers are compatible with SKU 804665-B21?
The 804665-B21 SSD is compatible with HPE ProLiant Gen8, Gen9, Gen10 and later servers featuring 2.5-inch drive bays and SATA 6 Gb/s support.
What level of performance can I expect from this write-intensive SSD?
This SSD delivers up to 535 MB/s sequential read, 450 MB/s sequential write and up to 80 K random read/write IOPS for demanding write-intensive workloads.
What is the endurance rating of the HPE 400GB SATA 6G Write Intensive SSD?
With a 10 Drive Writes Per Day (DWPD) rating over a 3-year period, this SSD supports sustained write-intensive operations.
How long is the warranty on the HPE 400GB SATA 6G Write Intensive SFF SSD?
HPE provides a 3-year limited warranty covering parts and labor, ensuring dependable service for critical applications.
What interface does the 804665-B21 SSD use?
The SSD uses a standard SATA 6 Gb/s (SATA III) interface, compatible with most HPE 2.5-inch drive bays.
What form factor and capacity does this SSD offer?
This drive is a small-form-factor (SFF) 2.5-inch SSD with 400 GB usable capacity, ideal for high-density server configurations.
Can I install this SSD in a RAID configuration?
Yes, the HPE 400GB SATA 6G Write Intensive SSD supports RAID 0, 1, 5, 6, 10 and 50 when used with HPE Smart Array controllers.
How do I install the 804665-B21 SSD in an HPE Gen8 server?
Power down the server, slide the SSD into an available 2.5-inch SATA bay, secure the drive carrier, then power up and configure in the Smart Array controller BIOS.
Which operating systems are supported by this HPE SSD?
This SSD is certified for HPE ProLiant servers running Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server and VMware ESXi.
Does the HPE 400GB SATA 6G SSD include power-loss data protection?
Yes, the drive features on-board power-loss protection capacitors to flush data from DRAM to NAND in the event of unexpected power failure.
How can I monitor the health of my HPE 804665-B21 SSD?
Use HPE Smart Storage Administrator or HPE Integrated Lights-Out (iLO) to view SMART attributes, wear leveling, and remaining lifespan.
What is the difference between write-intensive and read-intensive SSDs?
Write-intensive SSDs like the 804665-B21 are optimized for high write endurance (10 DWPD) while read-intensive drives focus on lower write workloads (0.5–1 DWPD).
How do I troubleshoot performance issues with this SSD?
Verify firmware is current, check SMART status with HPE SSA, confirm SATA link speed, and ensure adequate cooling within the drive bay.
Where can I purchase the HPE 400GB SATA 6G Write Intensive SFF SSD (804665-B21)?
You can order this SSD through HPE authorized resellers, the HPE Parts Store or certified distribution partners for immediate delivery.