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Write-intensive SATA SSD performs well for logging workloads.
804677-B21
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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.