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Cost effective SATA drive for non critical data.
861681-B21
2TB 6G SATA 7200 RPM LFF MDL LP HDD PL-SI NO DEAL REG PRICIN...
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Name:
861681-B21
- Description:
- 2TB 6G SATA 7200 RPM LFF MDL LP HDD PL-SI NO DEAL REG PRICING
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Hpe
- Condition:
- Warranty:
- 3
- List Price:
$515.00
- Price:
$219.0057.5% off
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1
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861681-B21 Overview
861681-B21 is a high-performance HDD engineered for demanding enterprise environments. This model comes in a 3.5-inch form factor and utilizes a SATA III interface, delivering reliable 7200 RPM operation with a substantial 4 TB storage capacity and a generous 256 MB cache. Its robust design supports rigorous data handling and ensures fast, consistent access to stored information.
Designed to meet the needs of data centers, NAS systems, desktops, and surveillance applications, 861681-B21 boasts an annual workload rating of 550 TB/yr and an industry-standard MTBF that reinforces its reliability. The drive operates efficiently with low power consumption (approximately 8.5 Watts during read/write operations and 5.5 Watts at idle) and incorporates advanced features such as a helium-sealed design, vibration protection, and dual actuator technology to enhance performance in multi-bay storage environments.
861681-B21 price is $219.00, a 57.5% saving from the Hpe list price of $515.00. 861681-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 861681-B21 for additional pricing. Browse the full Hpe Server 3.5" Hard Drives series or explore all Hpe products.
861681-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)
- 8.5 Watts
- Power Consumption (Idle)
- 5.5 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- 861681-B21 Helium-Sealed Enterprise HDD
- Height
- 1.03 inches
- Width
- 4 inches
- Depth
- 5.79 inches
- Weight
- 2.1 lbs
861681-B21 Use Case
High-Performance Virtualization Storage with 861681-B21-2TB 6G SATA 7200 RPM HDD
In a small-to-medium enterprise data center, IT architects deploy the 861681-B21-2TB 6G SATA 7200 RPM LFF MDL LP HDD PL-SI NO DEAL REG PRICING in HPE ProLiant servers to host VMware and Hyper-V datastores. This use case delivers consistent 6 Gb/s throughput and 7200 RPM spindle speed, enabling low-latency VM boot and live migration. Benefit: maximized VM density, predictable performance under mixed workloads, and a competitive cost-per-GB ratio for scalable virtualization environments.
Regulatory-Compliant Backup & Archival for Financial Services
A mid-tier financial institution integrates the 861681-B21-2TB 6G SATA 7200 RPM LFF MDL LP HDD into an HPE MSA storage array for nightly backups and long-term archival. Leveraging enterprise-grade reliability and 2 TB capacity per drive, the solution meets SEC and GDPR retention mandates while minimizing rack space. Benefit: streamlined data retention workflows, audit-ready backups with built-in redundancy, and optimized TCO through high-density, low-power drives.
24/7 Video Surveillance Storage for IP Cameras
Security integrators install the 861681-B21-2TB 6G SATA 7200 RPM LFF MDL LP HDD in network video recorders (NVRs) to support 16-channel 1080p video streams. The drive’s sustained write performance and enterprise duty cycle ensure uninterrupted recording and rapid retrieval of footage for forensic analysis. Benefit: reliable continuous recording, high-resolution storage capability, and simplified drive replacement—delivering peace of mind for mission-critical surveillance deployments.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 861681-B21 |  K2P87B |  N9Y46A |  843270-B21 |  818365-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | 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 | 10 TB | 16 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 | 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 250 MB/s | Up to 250 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 9 Watts | 8 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 5.5 Watts | 7 Watts | 6 Watts | 6 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 | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–55°C |
| Product Name | 861681-B21 Helium-Sealed Enterprise HDD | K2P87B | N9Y46A Enterprise Performance HDD | 843270-B21 16TB Enterprise HDD | 818365-B21 Enterprise Series HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1 inches |
| Width | 4 inches | 5.78 inches | 5.79 inches | 5.79 inches | 5.8 inches |
| Depth | 5.79 inches | 4.00 inches | 4.00 inches | 4.01 inches | 4 inches |
| Weight | 2.1 lbs | 1.8 lbs | 2.10 lbs | 1.6 lbs | 1.2 lbs |
Reviews & Ratings
K
Kashif Mahmood
4
Stable operation in mixed environments.
M
Miguel Torres
5
Easy to deploy.
S
Saqlain Raza
3
Works as expected.
P
Petri Salmi
4
Good value HDD.
Questions & Answers
What is the storage capacity of SKU 861681-B21?
The SKU 861681-B21 hard drive offers 2 TB of raw storage capacity.
What interface and transfer rate does this drive use?
This drive uses a 6 Gbps SATA interface for data transfers.
What is the rotational speed of the 861681-B21 drive?
The drive spins at 7,200 RPM for balanced performance and capacity.
What form factor does the 861681-B21 hard disk come in?
It is a Large Form Factor (3.5-inch) hard drive.