United States
Name:
P04478-B21
- Description:
- HP 1.92TB SATA 6G RI SFF 2.5-INCH SC DS FIRMWARE SSD
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3 Year Extended Warranty
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14-Day Money Back Guarantee
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Express Delivery Across the USA
Need it fast? Choose Express Shipping and receive your order within 1–3 business days.
Free Ground Shipping Available
Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
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.
What is the price of P04478-B21?
Pricing for P04478-B21 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for P04478-B21.
Explore more options from Hard Drives & Ssds or explore other 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
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| Advanced Features | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
| Annual Workload Rating | 180 TB/yr | 300 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| 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 |
| Depth | 4.00 inches | 4.00 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Drive Bays Supported | Multi-bay | Multi-bay | Single | Multi-bay | Multi-bay |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Helium Sealed | Helium-Sealed | No | Helium-Sealed | No | Helium-Sealed |
| Interface | SATA III | SATA III | SATA III | SATA III | SAS 12Gb/s |
| Operating Temperature | 5–55°C | 5–60°C | 5–55°C | 5–60°C | 5–60°C |
| Power Consumption (Idle) | 5 Watts | 4 Watts | 6.3 Watts | 5 Watts | 7 Watts |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8.5 Watts | 8 Watts | 9 Watts |
| Product Name | 870759-B21 Enterprise HDD | P04478-B21 Enterprise 4TB HDD | P04545-B21 | 791034-B21 Enterprise HDD | Q5T11A Enterprise Helium-Sealed HDD |
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Storage Capacity | 10 TB | 4 TB | 4 TB | 4 TB | 10 TB |
| 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 |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Weight | 2.10 lbs | 2.2 lbs | 1.50 lbs | 2.1 lbs | 1.4 lbs |
| Width | 5.79 inches | 5.79 inches | 4.00 inches | 4.01 inches | 4 inches |
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Questions & Answers
Q
What is the capacity of the HP P04478-B21 SSD?
A
The HP P04478-B21 SSD provides 1.92 TB of usable storage capacity in a single 2.5-inch drive.
Q
Which interface does the HP 1.92 TB SATA SSD support?
A
This SSD uses a SATA 6 Gb/s interface for high-speed data transfer and broad host compatibility.
Q
What form factor is the HP 1.92 TB SATA 6G RI SSD?
A
The drive is a 2.5-inch small form factor (SFF) enterprise SSD, 15 mm in height, suitable for modern servers and storage arrays.
Q
What sequential read and write speeds can I expect?
A
The HP P04478-B21 delivers up to 550 MB/s sequential read and 500 MB/s sequential write performance under typical workloads.
Q
What endurance rating does this read-intensive SSD offer?
A
Engineered for read-intensive workloads, it supports up to 0.3 DWPD (drive writes per day) over a 3-year warranty period.
Q
Is the firmware upgradeable?
A
Yes. HP provides firmware updates through the HP Smart Storage Administrator (SSA) to ensure optimal performance and reliability.
Q
Does the SSD support TRIM and S.M.A.R.T.?
A
Yes. The drive fully supports ATA TRIM commands for sustained performance and S.M.A.R.T. for proactive health monitoring.
Q
Which HP servers and storage systems are compatible?
A
It is compatible with HP ProLiant Gen8/Gen9/Gen10 servers, HP Apollo systems, and any storage array that accepts 2.5″ SATA 6 Gb/s hot-plug drives.
Q
Is the drive hot-swappable?
A
Yes. The SFF design and SATA 6 Gb/s interface support hot-plugging for easy maintenance without system downtime.
Q
What warranty does the HP 1.92 TB SATA SSD include?
A
HP backs this SSD with a 3-year limited warranty covering defects in materials and workmanship.
Q
What power consumption can I expect?
A
Typical operating power is 3.5 W active and 0.8 W idle, optimizing energy efficiency in data-center environments.
Q
What temperature range is supported?
A
The drive operates reliably between 0 °C and 60 °C and can be stored between –40 °C and 85 °C.
Q
Does the SSD offer hardware encryption?
A
No. This read-intensive model does not include self-encrypting drive (SED) features; consider HP self-encrypting variants if encryption is required.
Q
How do I install the HP P04478-B21 SSD?
A
Slide the drive into any compatible 2.5″ hot-plug bay, secure the carrier, and verify detection in the server’s BIOS or HP SSA tool.
Q
Can this SSD be used in RAID configurations?
A
Yes. It works with HP Smart Array controllers and third-party RAID cards to deliver high availability and data protection.
Q
What are the key use cases for this read-intensive SSD?
A
Ideal for large-scale database querying, virtualization read caches, and content delivery where high read throughput is critical.
