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804631-B21
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HP 1.6TB 6G SATA MIXED USE-2 SFF 2.5-IN SC SOLID STATE DRIVE
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Name:
804631-B21
- Description:
- HP 1.6TB 6G SATA MIXED USE-2 SFF 2.5-IN SC SOLID STATE DRIVE
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- Brand:
- Hpe
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804631-B21 Overview
804631-B21 is a high-performance HDD engineered for enterprise storage and multi-bay environments. It features a 3.5-inch form factor, a SATA III interface, and a robust 7200 RPM spindle speed. With a generous 8 TB capacity and a 256 MB buffer, this drive is designed to handle rigorous workloads while delivering reliable, high-speed data transfer rates up to 250 MB/s.
Built for demanding server, NAS, and surveillance use cases, the drive supports an annual workload rating of 180 TB/yr and comes equipped with advanced dual actuator technology for improved performance under vibration. 804631-B21 is also optimized for energy efficiency with an 8.5 Watts read/write power consumption and 5 Watts in idle mode, making it an ideal choice for data centers and desktop setups requiring dependable, continuous operation.
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Request bulk order quote for 804631-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
804631-B21 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
- 8 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)
- 8.5 Watts
- Power Consumption (Idle)
- 5 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
- 804631-B21
- Height
- 1.03 inches
- Width
- 4.0 inches
- Depth
- 5.8 inches
- Weight
- 1.5 lbs
804631-B21 Use Case
Accelerating OLTP Workloads in Financial Services
In a 24/7 stock trading environment, the 804631-B21 HP 1.6TB 6G SATA Mixed Use-2 SFF 2.5″ SC SSD backs SQL Server clusters handling millions of daily transactions. Its 3 DWPD endurance and sustained 80K random IOPS at sub-millisecond latency ensure order-to-execution times shrink by 30%, maintain 99.99% uptime and deliver regulatory compliance with built-in AES-256 encryption.
Optimizing Enterprise Virtual Desktop Infrastructure (VDI)
For a global enterprise deploying 2,000 remote desktops on VMware vSAN, the 1.6TB 6G SATA Mixed Use-2 SSD provides 70K+ sustained IOPS and consistent sub-0.5 ms response. The drive’s high endurance and power-loss protection cut boot-storm delays in half, boost end-user productivity by 25% and lower rack density by consolidating storage bays.
Powering Edge AI Inference in Telecom Micro Data Centers
At telecom base stations running real-time edge analytics, the HP 804631-B21 SSD ingests and persists sensor data streams from 100+ IoT endpoints. Its robust Mixed Use-2 design and industrial-temperature rating deliver sub-millisecond access and 3 DWPD reliability, enabling continuous AI inference, reducing backhaul traffic by 40% and ensuring 24/7 service availability.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 804631-B21 |  K2P91A |  P04517-B21 |  804599-B21 |  881457-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SATA III |
| Form Factor | 3.5-inch | 2.5-inch / 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 8 TB | 10 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 | 4.17 ms |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 550 TB/yr | 180 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 8 Watts | 8 Watts | 8 Watts | 10 Watts |
| Power Consumption (Idle) | 5 Watts | 5 Watts | 5 Watts | 5 Watts | 5 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 | 5–60°C | 5–60°C | 5–55°C | 0–60°C |
| Product Name | 804631-B21 | K2P91A Enterprise HDD | P04517-B21 High Performance Enterprise HDD | 804599-B21 High Performance Helium-Sealed HDD | 881457-B21 |
| Height | 1.03 inches | 1 in | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 4.0 inches | 5.8 in | 5.77 inches | 5.79 inches | 5.79 inches |
| Depth | 5.8 inches | 4 in | 8.00 inches | 4.00 inches | 4.01 inches |
| Weight | 1.5 lbs | 1.5 lbs | 1.65 lbs | 2.20 lbs | 1.75 lbs |
Reviews & Ratings
S
Sadia Rahim
5
Reliable under mixed workloads.
P
Petr Dolezal
5
Smooth installation and stable operation.
I
Imran Qazi
4
Good option for enterprise servers.
A
Alan Reeves
5
Predictable SATA SSD performance.
Questions & Answers
What is the storage capacity of the HP 804631-B21 SSD?
The HP 804631-B21 provides 1.6 TB of usable solid-state storage, ideal for high-density data and application workloads.
Which interface does the HP 804631-B21 use?
It connects via a 6 Gb/s SATA interface for broad compatibility with enterprise server and storage platforms.
What form factor is the HP 804631-B21 SSD?
This drive is a 2.5-inch small form factor (SFF) solid-state drive, designed for modern rack and blade servers.
What performance levels can I expect from the HP 804631-B21?
It delivers up to 530 MB/s sequential read, 490 MB/s sequential write, up to 100,000 IOPS random read and 35,000 IOPS random write.