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$515.00
$219.0057.5% off
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861681-B21
2TB 6G SATA 7200 RPM LFF MDL LP HDD PL-SI NO DEAL REG PRICIN...
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
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.
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.
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.
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| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Cost effective SATA drive for non critical data.
Stable operation in mixed environments.
Easy to deploy.
Works as expected.
Good value HDD.
The SKU 861681-B21 hard drive offers 2 TB of raw storage capacity.
This drive uses a 6 Gbps SATA interface for data transfers.
The drive spins at 7,200 RPM for balanced performance and capacity.
It is a Large Form Factor (3.5-inch) hard drive.
Yes, it is fully qualified for HPE ProLiant Gen8, Gen9 and Gen10 servers.
Yes, it supports hot-plug operations in compatible HPE server bays.
Typical average seek time is 8.5 ms for efficient random read/write operations.
It is optimized for nearline storage, backup and general-purpose server workloads.
Operating power consumption is approximately 6.8 W during read/write activity.
The drive has an MTBF rating of 1.2 million hours.
It operates reliably between 5 °C and 50 °C at 8%–90% relative humidity.
Yes, it includes SMART support for predictive failure analysis.
Dimensions are 146.99 × 101.6 × 26.1 mm and weight is approximately 0.75 kg.
It withstands up to 290 m/s² shock (non-operating) and 1.04 Grms vibration (operating).
It is covered by a standard three-year HPE limited warranty.
It indicates standard list pricing without promotional or deal discounts.
Insert the drive into a compatible hot-swap bay; the server firmware will detect and configure it automatically.
United States
