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Write-intensive SAS SSD performs reliably under heavy writes.
846432-B21
HPE 1.6TB SAS 12G Write Intensive SFF (2.5in) SC 3yr Warrant...
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846432-B21
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- HPE 1.6TB SAS 12G Write Intensive SFF (2.5in) SC 3yr Warranty SSD For use with Gen8 Servers and Beyond
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846432-B21 Overview
846432-B21 is a high-performance HDD engineered in a 3.5-inch form factor with a SATA III interface, featuring a 7200 RPM spindle speed. It offers a 6 TB storage capacity along with a 256 MB buffer, an annual workload rating of 550 TB/yr, and an MTBF delivering proven reliability rated at 99.9% operational hours per year.
This drive is designed for use in data centers, desktops, NAS, and surveillance systems while maintaining efficient power consumption of approximately 10 Watts during read/write operations and 5 Watts when idle. Advanced features include a helium-sealed design, integrated vibration protection, and a dual actuator configuration for enhanced performance in demanding environments.
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Request bulk order quote for 846432-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
846432-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
- 6 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
- 550 TB/yr
- Power Consumption (Read/Write)
- 10 Watts
- Power Consumption (Idle)
- 5 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–55°C
- Product Name
- 846432-B21
- Height
- 1.03 inches
- Width
- 5.78 inches
- Depth
- 7.36 inches
- Weight
- 2.1 lbs
846432-B21 Use Case
Real-Time Financial Transaction Logging on Gen8 Servers
A trading firm implements the 846432-B21 HPE 1.6TB SAS 12G Write Intensive SFF (2.5in) SC SSD in its Gen8 server cluster to sustain sub-millisecond write latency for every buy/sell order. Benefit: Guarantees consistent, low-latency writes for real-time transaction recording, accelerating trade reconciliation by up to 40% and ensuring data integrity during peak market activity.
Enterprise VDI Boot-Storm Acceleration with Write-Intensive SSDs
An enterprise IT department deploys the 846432-B21 HPE 1.6TB SAS 12G Write Intensive SFF (2.5in) SC SSD in Gen8 servers to host 1,000+ virtual desktops. Benefit: Dramatically reduces boot-storm write bottlenecks by 50%, delivering faster user logins, higher desktop density per chassis and a smoother end-user experience under heavy I/O loads.
High-Throughput ERP Database Consolidation on HPE Gen8
A global manufacturer consolidates multiple transaction-heavy ERP and CRM databases onto Gen8 servers equipped with the 846432-B21 HPE 1.6TB SAS 12G Write Intensive SFF (2.5in) SC SSD. Benefit: Provides sustained write performance for concurrent ledger updates, cutting batch processing windows by 30% and boosting operational agility across global sites.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 846432-B21 |  N9Y06B |  872382-B21 |  Q0F44A |  Q6L97A | |
|---|---|---|---|---|---|
| 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 | Server | 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 / SAS 6Gb/s | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 2.5-inch / 3.5-inch | 3.5-inch |
| Storage Capacity | 6 TB | 4 TB | 8 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 | 64 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 210 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 180 TB/yr |
| Power Consumption (Read/Write) | 10 Watts | 8 Watts | 8 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 5 Watts | 6 Watts | 5 Watts | 5 Watts | 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 | 5–55°C | 5–60°C | 5–60°C | 5–60°C | 5–55°C |
| Product Name | 846432-B21 | N9Y06B Enterprise HDD | 872382-B21 Enterprise HDD | Q0F44A Enterprise HDD | Q6L97A Enterprise HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.78 inches | 5.79 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Depth | 7.36 inches | 4.00 inches | 4.00 inches | 8.70 inches | 4.01 inches |
| Weight | 2.1 lbs | 2.5 lbs | 2.2 lbs | 1.5 lbs | 1.8 lbs |
Reviews & Ratings
S
Sumbul Shah
4
Stable firmware and consistent performance.
K
Krzysztof Mazur
4
Good endurance profile for databases.
H
Haris Latif
5
Smooth installation and no issues.
D
Dean Mitchell
5
Enterprise WI SSD that delivers.
Questions & Answers
What is the capacity and form factor of the HPE 846432-B21 SSD?
The HPE 846432-B21 delivers 1.6 TB of usable capacity in a 2.5-inch small form factor (SFF) design.
What interface and data transfer rate does this SSD support?
It uses a 12 Gb/s SAS interface, providing enterprise-grade throughput optimized for high-performance workloads.
What does “write intensive” mean and is this SSD suitable for high-write workloads?
Write-intensive indicates a high drive-writes-per-day (DWPD) rating, making it ideal for heavy-write applications like databases and virtualization.
Is the HPE 846432-B21 SSD compatible with Gen8 servers and newer models?
Yes, it’s fully qualified for HPE Gen8, Gen9, Gen10 and later servers with Smart Array controllers.
What warranty coverage comes with this SSD?
This SSD includes a 3-year limited warranty covering defects, endurance failures and firmware support through HPE.
How do I install the HPE 1.6 TB SAS SSD into my server?
Simply slide the 2.5″ drive into a compatible SFF bay, secure it in the sled, and connect to the SAS backplane—no extra drivers required.
What endurance rating does this write-intensive SSD offer?
It supports up to 3 full drive writes per day (DWPD) over the 3-year warranty period.
Can this SSD be hot-swapped in live server environments?
Yes, it supports hot swapping for zero-downtime replacement in enterprise systems.
Which operating systems support the HPE 1.6 TB SAS 12G SSD?
It’s compatible with Windows Server, major Linux distributions, VMware ESXi and other enterprise OS platforms.
How does this write-intensive SSD differ from a read-intensive model?
Write-intensive SSDs offer higher DWPD and endurance, while read-intensive SSDs optimize read IOPS for low-write environments.
What performance specifications (IOPS, throughput) can I expect?
Expect up to 200,000 random read IOPS, 50,000 random write IOPS and sequential throughput exceeding 1,800 MB/s.
Does this SSD include power-loss data protection features?
Yes, onboard power-loss protection capacitors safeguard in-flight data during unexpected outages.
Can I mix this SSD with other HPE drives in a RAID configuration?
Yes, you can combine SAS SSDs with other HPE drives in Smart Array RAID, but we recommend matching capacity and performance tiers.
How does the 3-year warranty work if the drive fails?
Within three years, HPE will repair or replace the drive at no extra cost under the standard limited warranty terms.
What monitoring tools can I use to track SSD health and performance?
Use HPE Smart Storage Administrator (SSA) or HPE InfoSight for real-time health, performance metrics and proactive alerts.
Are firmware updates required for Gen8 server compatibility?
HPE periodically releases firmware updates—use SSA to apply recommended updates for optimal stability and performance.