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804639-B21
HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC SOLID
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804639-B21
- Description:
- HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC SOLID
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804639-B21 Overview
804639-B21 is a high-performance HDD designed in a 3.5-inch form factor with a SATA III interface and a 7200 RPM spindle speed. It offers a robust 4 TB storage capacity with a 256 MB cache, a 300 TB/yr annual workload rating, and an MTBF of 2,500,000 hours, ensuring dependable operation in demanding environments.
Engineered for both desktop and enterprise applications—including data centers, NAS, and surveillance systems—this drive features low power consumption (approximately 12 Watts for read/write and 8 Watts when idle), advanced vibration protection, and a dual actuator design in a helium-sealed enclosure. Its durability and efficiency make it an ideal solution for continuous, high-reliability operations.
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Request bulk order quote for 804639-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
804639-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 250 MB/s
- Annual Workload Rating
- 300 TB/yr
- Power Consumption (Read/Write)
- 12 Watts
- Power Consumption (Idle)
- 8 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
- 804639-B21 Enterprise HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.00 inches
- Weight
- 1.5 lbs
804639-B21 Use Case
High-Performance Transaction Logging for E-commerce with HP 804639-B21-HP SSD
In a global online retail environment processing peak holiday orders, the 804639-B21-HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC SOLID SSD delivers up to 95K sustained write IOPS. Deploying it for transactional database logs and order queues reduces write latency by 45%, maintains sub-2 ms response times under load, and ensures real-time audit-ready compliance. Outcome: faster checkouts, higher order throughput, and secure transaction trails.
Enterprise VDI Acceleration with HP 804639-B21 Write-Intensive SSD
A financial services firm supporting 3,000 remote desktops integrated the 804639-B21-HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC SOLID SSD for boot volumes and user profiles. Its 1 DWPD endurance and consistent write performance cut login times by 60% and eliminated I/O bottlenecks during boot storms. Outcome: enhanced end-user productivity, predictable SLA compliance, and reduced infrastructure refresh cycles.
Real-Time Network Telemetry and Logging for Telecom with HP 804639-B21 SSD
A Tier-1 telecom operator ingesting 8 TB of call data records and network logs daily deployed the 804639-B21-HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC SOLID SSD in its core logging cluster. Its high write endurance supports continuous data streams, cutting log ingestion latency by 50% and enabling real-time analytics. Outcome: improved network reliability, accelerated fault detection, and streamlined billing reconciliation.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 804639-B21 |  Q6M05A |  K2P93B |  816899-B21 |  804625-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 / Server | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage |
| Interface | SATA III | SATA III | SATA III | SATA III | SAS 12Gb/s |
| 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 | 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 | 256 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| 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 | 300 TB/yr | 550 TB/yr | 300 TB/yr | 180 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 12 Watts | 8 Watts | 8.5 Watts | 8 Watts | 7.2 Watts |
| Power Consumption (Idle) | 8 Watts | 5 Watts | 5.2 Watts | 5 Watts | 4.5 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 | 5–60°C | 5–60°C | 5–60°C | 5–55°C | 5–60°C |
| Product Name | 804639-B21 Enterprise HDD | Q6M05A | K2P93B HDD | 816899-B21 Enterprise HDD | 804625-B21 Enterprise HDD |
| Height | 1.03 inches | 1.00 inches | 1.03 inches | 1.00 inches | 1.03 inches |
| Width | 5.79 inches | 4.00 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Depth | 4.00 inches | 5.80 inches | 4.00 inches | 4.00 inches | 4.00 inches |
| Weight | 1.5 lbs | 1.2 lbs | 2.20 lbs | 1.65 lbs | 2.2 lbs |
Reviews & Ratings
A
Anaya Javed
4
Good endurance for transactional systems.
F
Filip Horak
5
Predictable write latency.
U
Usman Latif
4
Easy deployment and consistent results.
B
Brian Keller
4
Reliable WI SATA SSD.
Questions & Answers
What is the HP 200GB 6G SATA WRITE INTENSIVE-2 SFF 2.5-IN SC Solid State Drive (SKU: 804639-B21)?
The HP 804639-B21 is an enterprise-grade 2.5″ SATA SSD offering 200 GB capacity, a 6 Gb/s interface, write-intensive endurance and self-encrypting drive (SC) security.
What are the key specifications of the HP 804639-B21 SSD?
It delivers 200 GB storage, SATA 6 Gb/s bandwidth, up to 80,000 read IOPS, 21,000 write IOPS, 2.5″ form factor, write-intensive endurance and AES-256 self-encryption.
What performance can I expect from this 200 GB SATA SSD?
Typical performance reaches 80,000 random read IOPS, 21,000 random write IOPS, and sequential throughput up to 560 MB/s read and 520 MB/s write.
Is the HP 804639-B21 SSD compatible with HP ProLiant servers?
Yes, it is fully validated for Gen8 and Gen9 ProLiant servers and supported by Smart Array controllers for optimal reliability.
How do I install the HP 200 GB SATA SSD in my server?
Slide the drive into a compatible 2.5″ hot-swap tray, insert it into an available bay, secure the latch and configure it in the server BIOS or RAID utility.
Does the 804639-B21 SSD support hardware encryption?
Yes, it features AES-256 self-encrypting drive (SED) technology for on-drive data protection without performance impact.
What endurance rating does this write-intensive SSD offer?
It supports up to 10 Drive Writes Per Day (DWPD) over a three-year warranty, delivering approximately 2.19 PB total bytes written (TBW).
What warranty coverage comes with the HP 804639-B21 SSD?
HP provides a three-year limited warranty with free parts and labor for manufacturing defects and premature failures.
How energy efficient is the HP 200 GB SATA SSD?
It consumes just 3.5 W active and 0.8 W idle, lowering data center power and cooling costs compared to HDDs.
Can I deploy this SSD in RAID configurations?
Yes, it supports RAID 0, 1, 5 and 6 when paired with HP Smart Array controllers for high availability and performance.
Will the HP 804639-B21 SSD work in non-HP systems?
Yes, it adheres to the industry standard 2.5″ SATA interface, though HP firmware-level optimizations apply when used in HP hardware.
What is the MTBF rating of this HP SSD?
The 804639-B21 is rated at 1.6 million hours mean time between failures (MTBF) for enterprise-class reliability.
How does this SSD improve database and transactional workloads?
With high write endurance and low latency, it accelerates OLTP, logging and caching workloads, reducing I/O bottlenecks.
Which workloads are best suited for this write-intensive SSD?
It excels in virtualization, high-transaction databases, data logging, analytics and other write-heavy enterprise applications.
What’s the difference between Write Intensive (WI) and Read Intensive (RI) SSD models?
WI models like the 804639-B21 offer higher endurance (10 DWPD) and sustained write performance compared to RI models designed for mostly read workloads.
Where can I purchase the HP 804639-B21 SSD and get support?
Order through authorized HPE channel partners or the HP Enterprise store, and access technical support via the HPE support portal.