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Write-intensive SATA SSD performs well for logging workloads.
804677-B21
HPE 1.2TB SATA 6G Write Intensive SFF (2.5in) SC 3yr Warrant...
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804677-B21
- Description:
- HPE 1.2TB SATA 6G Write Intensive SFF (2.5in) SC 3yr Warranty SSD For use with Gen8 Servers and Beyond
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804677-B21 Overview
804677-B21 is a high-performance HDD designed with a 3.5-inch form factor and a SATA III interface. It spins at 7200 RPM, delivers a storage capacity of 4 TB, and is equipped with a robust 256 MB cache to support enterprise-level read/write operations.
804677-B21 offers an annual workload rating of 300 TB/yr and an MTBF of 1,000,000 hours, ensuring reliability with rated usage hours suitable for demanding desktop, server, NAS, and surveillance applications. Its advanced features include a helium-sealed design, built-in vibration protection, and dual actuators, all while maintaining efficient power consumption for data center and enterprise environments.
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Request bulk order quote for 804677-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
804677-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)
- 6 Watts
- Encryption Support
- No
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 0–60°C
- Product Name
- 804677-B21 4TB SATA Enterprise HDD
- Height
- 1 inches
- Width
- 4 inches
- Depth
- 5.8 inches
- Weight
- 3 lbs
804677-B21 Use Case
High-Throughput Transactional Database Acceleration
In a financial trading firm running high-volume SQL Server clusters on HPE Gen8 servers, the 804677-B21-HPE 1.2TB SATA 6G Write Intensive SFF SSD offloads write-heavy transaction logs, cutting I/O latency by 65% and boosting sustained write throughput to 500 MB/s. This results in sub-millisecond commit times, higher trade-matching speed, and 30% better database concurrency, ensuring peak performance under extreme transactional loads.
Virtual Desktop Infrastructure (VDI) Boot-Storm Mitigation
An enterprise IT department deploying 300 virtual desktops on HPE Gen8 servers replaces traditional HDDs with the 804677-B21-HPE 1.2TB SSD to address morning boot-storm spikes. The SSD’s write-intensive design delivers 40,000 random write IOPS and consistent sub-1 ms latency, reducing login times by 50% and enhancing user experience. Warranty-backed reliability minimizes downtime and slashes VDI maintenance costs.
Rapid Backup and Snapshot Consolidation
A healthcare provider runs nightly EMR backups and real-time snapshot consolidation on HPE Gen8 storage arrays. By integrating the 804677-B21-HPE 1.2TB Write Intensive SSD, backup ingest rates rise to 2 GB/min, cutting window times in half. Its endurance rating supports daily full/incremental cycles without degradation, ensuring regulatory compliance, fast recovery point objectives (RPOs), and a three-year warranty for sustained reliability.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 804677-B21 |  Q6M07A |  822555-B21 |  765036-B21 |  P09100-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | 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 | 8 TB | 8 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 128 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 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 | 180 TB/yr | 300 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 9 Watts | 8.5 Watts | 8.5 Watts |
| Power Consumption (Idle) | 6 Watts | 6 Watts | 6 Watts | 5.5 Watts | 5.0 Watts |
| Encryption Support | No | 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 | 0–60°C | 5–60°C | 5–60°C | 5–55°C | 5–55°C |
| Product Name | 804677-B21 4TB SATA Enterprise HDD | Q6M07A Enterprise HDD | 822555-B21 | Seagate 765036-B21 8TB Enterprise HDD | P09100-B21 Enterprise HDD |
| Height | 1 inches | 1.03 inches | 1.03 inches | 1.02 inches | 1.03 inches |
| Width | 4 inches | 5.79 inches | 4.00 inches | 5.79 inches | 5.8 inches |
| Depth | 5.8 inches | 4.00 inches | 5.79 inches | 6.88 inches | 8.7 inches |
| Weight | 3 lbs | 3.5 lbs | 2.1 lbs | 2.1 lbs | 1.5 lbs |
Reviews & Ratings
R
Rimsha Javed
5
Stable writes and good endurance.
A
Alberto Rios
4
Predictable latency and reliable operation.
S
Saifullah Khan
4
Easy deployment and consistent performance.
B
Brent Coleman
5
Solid WI SSD for enterprise use.
Questions & Answers
What is the capacity of the HPE 804677-B21 SSD?
The HPE 804677-B21 SSD provides 1.2 TB of usable capacity for high‐density storage in Gen8 and newer servers.
What form factor and interface does this SSD use?
This drive is a Small Form Factor (2.5 inch) SATA 6 Gb/s SSD designed for front-accessible hot-plug bays.
Which HPE servers are compatible with the 804677-B21 SSD?
It is fully supported in HPE ProLiant Gen8, Gen9, Gen10 and Gen11 servers when paired with a SATA-capable Smart Array or Dynamic Smart Array controller.
What performance can I expect in sequential operations?
You can achieve up to 550 MB/s sequential read and 520 MB/s sequential write performance under ideal conditions.
Is the 804677-B21 SSD rated for write-intensive workloads?
Yes, it is a write-intensive SSD designed for sustained heavy-write tasks such as databases, virtualization and logging.
What endurance rating does the write-intensive SSD have?
The drive supports a high endurance rating, suitable for up to one drive‐write per day over its three-year service life.
Does this SSD come with a warranty?
It includes a three-year HPE Smart Carrier Limited Warranty and is eligible for optional HPE Proactive Care services.
Can I replace this SSD while the server is running?
Yes, the SSD supports hot swapping in any supported Smart Array controller bay without shutting down the server.
How do I monitor health and status of the SSD?
Use HPE Smart Storage Administrator or iLO Integrated Management Log to view drive health, wear metrics and firmware version.
Are firmware updates available for the 804677-B21 SSD?
Yes, firmware updates are delivered through the HPE Service Pack for ProLiant (SPP) and can be applied via Smart Storage Administrator.
Which use cases are ideal for this write-intensive SSD?
It is optimized for transactional databases, virtual machine swap files, logging and other write-heavy applications.
Does the HPE SSD support hardware encryption?
No, the 804677-B21 model does not include self-encrypting drive capabilities; consider HPE SED models for full hardware encryption.
What power consumption can I expect?
Typical power draw is approximately 5 W active, ensuring efficient operation in dense server environments.
How do I securely erase data before disposal?
Use HPE Secure Erase utility within HPE SSA or a certified third-party data-sanitization tool to meet data-sanitization requirements.
Can I use this SSD in non-HPE servers?
While interface-compatible with any SATA 6 Gb/s bay, full support, firmware updates and warranty coverage apply only in HPE servers.
What RAID levels are recommended with the 804677-B21 SSD?
For performance and redundancy, use RAID 1 or RAID 10 on HPE Smart Array controllers; RAID 5 and RAID 6 can also be configured but may impact write performance.