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Dependable SATA drive for secondary storage and archiving.
861752-B21
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HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wty 512e HDD
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861752-B21
- Description:
- HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wty 512e HDD
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- Brand:
- Hpe
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- Warranty:
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- List Price:
$798.20
- Price:
$271.3966% off
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861752-B21 Overview
861752-B21 is a high-performance HDD built in a 3.5-inch form factor featuring a SATA III interface and a 7200 RPM spindle speed. It offers a 4 TB storage capacity with a 256 MB cache, making it a dependable solution for high-demand enterprise storage systems.
Engineered for robust environments, the drive is rated with an annual workload of 550 TB/yr and is designed to meet rigorous reliability standards with a rated lifespan exceeding 1,200,000 hours per drive. With advanced features including helium-sealed construction, vibration protection, and dual actuator technology, along with efficient power consumption of 8 Watts during read/write operations and 5 Watts in idle mode, 861752-B21 is ideally suited for data centers, desktops, NAS, and surveillance applications.
861752-B21 price is $271.39, a 66% saving from the Hpe list price of $798.20. 861752-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 861752-B21 for additional pricing. Browse the full Hpe Server 3.5" Hard Drives series or explore all Hpe products.
861752-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- 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
- 550 TB/yr
- Power Consumption (Read/Write)
- 8 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
- 861752-B21 Enterprise HDD
- Height
- 1.03
- Width
- 4.00
- Depth
- 5.79
- Weight
- 3.25
861752-B21 Use Case
Edge Video Surveillance Bulk Storage for Retail Chains
A national retail chain deploys HPE ProLiant DL380 servers with 861752-B21-HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wty 512e HDD to record continuous 1080p video from hundreds of in-store cameras. The high-capacity, sequential I/O architecture delivers reliable 24/7 writes while reducing per-TB cost by 30%, ensuring compliant video retention and rapid retrieval for loss prevention and audit support.
Cold Data Archive in HPE StoreOnce Backup Systems
An enterprise IT department integrates 861752-B21-HPE 4TB SATA 6G Midline drives into HPE StoreOnce appliances to offload year-old backup snapshots and regulatory archives. With 7.2K RPM performance optimized for sequential reads/writes and proven HPE compatibility, the solution lowers total cost of ownership by 25% and accelerates restore times, meeting compliance SLAs without over-provisioning high-cost SSD tiers.
Secondary VM Storage for SMB Virtualization
A mid-sized professional services firm scales its VMware cluster by adding an HPE ProLiant server populated with 861752-B21-HPE 4TB SATA 6G Midline HDDs as secondary datastores for dev/test and file-share VMs. The balance of large capacity, consistent 7.2K RPM throughput, and HPE Factory Express integration delivers predictable performance, 40% lower acquisition cost versus enterprise SAS, and seamless expansion as project workloads grow.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 861752-B21 |  846528-B21 |  818367-B21 |  P04529-B21 |  881779-B21 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | 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 | 4 TB | 4 TB | 4 TB | 8 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 128 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 | 550 TB/yr | 550 TB/yr | 180 TB/yr | 180 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 7.5 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 5 Watts | 4 Watts | 4 Watts | 5 Watts | 6 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | No | 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 | Rotational Vibration Sensors |
| Operating Temperature | 5–55°C | 5–55°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 861752-B21 Enterprise HDD | 846528-B21 | 818367-B21 4TB Helium Sealed Desktop HDD | P04529-B21 | 881779-B21 Enterprise Series SAS Hard Drive |
| Height | 1.03 | 1.0 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 4.00 | 5.8 inches | 5.79 inches | 5.78 inches | 5.79 inches |
| Depth | 5.79 | 5.8 inches | 4.01 inches | 8.37 inches | 4.00 inches |
| Weight | 3.25 | 2.2 lbs | 1.6 lbs | 1.8 lbs | 2.0 lbs |
Reviews & Ratings
A
Ahmed Noman
5
Consistent speeds and quiet operation.
L
Lucas Meyer
5
Good capacity upgrade with no compatibility issues.
F
Fahad Iqbal
5
Works well for non critical workloads.
T
Tomas Eriksson
5
Reliable midline HDD.
Questions & Answers
What is the storage capacity of the HPE 861752-B21 HDD?
The HPE 861752-B21 hard drive offers 4TB of storage capacity, ideal for large data sets and backup applications.
Which interface does the HPE 861752-B21 use?
This HPE 4TB Midline HDD uses a SATA 6Gb/s interface for reliable data transfer and broad server compatibility.
What is the rotational speed of the HPE 861752-B21 drive?
The drive spins at 7,200 RPM, balancing performance and energy efficiency for midline storage workloads.
What form factor is the HPE 861752-B21?
The HPE 861752-B21 is a large form factor (LFF) 3.5-inch hard drive, designed for standard rack and tower servers.