Worldwide$5,000,000+
Inventory Delivered By
D
Daniel Cooper
4
High-capacity SATA SSD with reliable performance. Perfect for mixed workloads.
P04478-B21
Original Stock
Ready to Ship
HP 1.92TB SATA 6G RI SFF 2.5-INCH SC DS FIRMWARE SSD
FEATURED DEAL
Name:
P04478-B21
- Description:
- HP 1.92TB SATA 6G RI SFF 2.5-INCH SC DS FIRMWARE SSD
- 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
P04478-B21 Overview
P04478-B21 is a high-performance HDD engineered for robust desktop and server environments. This 3.5-inch drive features a SATA III interface and spins at 7200 RPM, delivering dependable performance for a variety of computing workloads.
P04478-B21 offers a 4 TB storage capacity with a 256 MB cache and is rated for an annual workload of 300 TB/yr. Designed with advanced features such as vibration protection and dual actuator technology, it provides reliable operation (MTBF of 2 million hours and reliability of 1 million rated hours per year) while consuming 8 Watts during read/write operations and 4 Watts when idle. Its design meets the demands of data centers, desktops, NAS, and surveillance applications.
P04478-B21 price is is available on request. Get immediate quote.
Request bulk order quote for P04478-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
P04478-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
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 210 MB/s
- Annual Workload Rating
- 300 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 4 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- No
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- P04478-B21 Enterprise 4TB HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.00 inches
- Weight
- 2.2 lbs
P04478-B21 Use Case
High-Performance Virtual Desktop Infrastructure (VDI) Acceleration
In a global enterprise VDI deployment, IT teams integrate the P04478-B21-HP 1.92TB SATA 6G RI SFF 2.5-inch SC DS Firmware SSD into blade servers to support 1,000+ concurrent desktop sessions. The SSD delivers consistent sub-1ms latency and 85K sustained IOPS, reducing login times by 40% and boosting end-user productivity. Outcome: predictable performance at scale with lower TCO and streamlined desktop management.
Enterprise SQL Database Transactional Optimization
A financial services firm deploys the P04478-B21-HP 1.92TB SATA 6G RI SFF 2.5-inch SC DS Firmware SSD in RAID-10 for high-volume OLTP workloads. The SSD’s advanced wear leveling and power-loss data protection enable 50% faster commit times and 2× throughput versus legacy HDD arrays. Outcome: accelerated real-time analytics, improved SLA compliance, and enhanced data integrity under peak transaction loads.
4K/8K Media Production and Post-Processing
A post-production studio equips editing workstations with the P04478-B21-HP 1.92TB SATA 6G RI SFF 2.5-inch SC DS Firmware SSD to manage large 4K and 8K video files. With sustained sequential reads of up to 550 MB/s and sustained writes of 520 MB/s, the SSD eliminates playback stutter and slashes render times by 30%. Outcome: seamless timeline editing, faster content turnaround, and higher artist throughput.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| P04478-B21 |  Q5T11A |  791034-B21 |  870759-B21 |  P04545-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 | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SAS 12Gb/s | 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 | 10 TB | 4 TB | 10 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 | 256 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 210 MB/s | Up to 210 MB/s | Up to 210 MB/s | Up to 210 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 300 TB/yr | 550 TB/yr | 550 TB/yr | 180 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 9 Watts | 8 Watts | 8 Watts | 8.5 Watts |
| Power Consumption (Idle) | 4 Watts | 7 Watts | 5 Watts | 5 Watts | 6.3 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Helium Sealed | No | Helium-Sealed | No | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Single |
| 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 | 5–55°C | 5–55°C |
| Product Name | P04478-B21 Enterprise 4TB HDD | Q5T11A Enterprise Helium-Sealed HDD | 791034-B21 Enterprise HDD | 870759-B21 Enterprise HDD | P04545-B21 |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.79 inches | 4 inches | 4.01 inches | 5.79 inches | 4.00 inches |
| Depth | 4.00 inches | 5.79 inches | 5.79 inches | 4.00 inches | 5.79 inches |
| Weight | 2.2 lbs | 1.4 lbs | 2.1 lbs | 2.10 lbs | 1.50 lbs |
Reviews & Ratings
H
Hassan Jilani
5
Deployed in multiple servers. No firmware issues.
M
Marta Zielinska
5
Improved overall system responsiveness noticeably.
A
Ahsan Saleem
5
Stable SSD for enterprise applications.
C
Chris Lambert
4
Good endurance and consistent speeds.
Questions & Answers
What is the capacity of the HP P04478-B21 SSD?
The HP P04478-B21 SSD provides 1.92 TB of usable storage capacity in a single 2.5-inch drive.
Which interface does the HP 1.92 TB SATA SSD support?
This SSD uses a SATA 6 Gb/s interface for high-speed data transfer and broad host compatibility.
What form factor is the HP 1.92 TB SATA 6G RI SSD?
The drive is a 2.5-inch small form factor (SFF) enterprise SSD, 15 mm in height, suitable for modern servers and storage arrays.
What sequential read and write speeds can I expect?
The HP P04478-B21 delivers up to 550 MB/s sequential read and 500 MB/s sequential write performance under typical workloads.