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High capacity SAS drive handled large datasets well.
861683-B21
4TB SATA 6G 7200 RPM 3.5IN LFF MDL LP HDD PL=SI
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Name:
861683-B21
- Description:
- 4TB SATA 6G 7200 RPM 3.5IN LFF MDL LP HDD PL=SI
- Rating:
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- Brand:
- Hpe
- Condition:
- Warranty:
- 3
- List Price:
$739.00
- Price:
$245.0066.8% off
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861683-B21 Overview
861683-B21 is a high-performance HDD engineered in a 3.5-inch form factor that utilizes the SAS 12Gb/s interface to deliver enterprise-class storage capabilities. This drive spins at 7200 RPM and provides a storage capacity of 4 TB with a 128 MB cache buffer, making it suitable for sustained data loads with an annual workload rating of 300 TB/yr and an MTBF of 2,000,000 hours rated for continuous 24/7 operation.
861683-B21 is optimized for demanding enterprise storage environments, featuring low power consumption of 9 Watts during read/write operations and 6 Watts when idle. Although not helium-sealed, it comes equipped with rotational vibration sensors for robust vibration protection, making it an ideal choice for multi-bay configurations in data centers, desktops, NAS systems, and surveillance applications.
861683-B21 price is $245.00, a 66.8% saving from the Hpe list price of $739.00. 861683-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 861683-B21 for additional pricing. Browse the full Hpe Server 3.5" Hard Drives series or explore all Hpe products.
861683-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Enterprise Storage
- Interface
- SAS 12Gb/s
- Form Factor
- 3.5-inch
- Storage Capacity
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 128 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 300 TB/yr
- Power Consumption (Read/Write)
- 9 Watts
- Power Consumption (Idle)
- 6 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- No
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Rotational Vibration Sensors
- Operating Temperature
- 5–55°C
- Product Name
- 861683-B21 Enterprise Performance HDD
- Height
- 1 in
- Width
- 5.8 in
- Depth
- 4 in
- Weight
- 2.2 lbs
861683-B21 Use Case
High-Density Enterprise Virtualization Storage with 861683-B21-4TB SATA 6G 7200 RPM HDD
In a VMware ESXi data center, IT architects deploy the 861683-B21-4TB SATA 6G 7200 RPM 3.5″ LFF HDD to expand VM storage capacity by 4 TB per bay. Its 6 Gb/s interface and 7200 RPM spindle speed deliver consistent I/O for mixed workloads while reducing rack footprint by 30 %. Benefit: Scales virtual machine density cost-effectively, lowers TCO, and improves storage utilization by up to 25 %.
Reliable Backup & Archival for SMB NAS with 861683-B21-4TB SATA 6G HDD
Small and medium businesses integrate the 861683-B21-4TB SATA 6G 7200 RPM 3.5″ LFF HDD into their network-attached storage appliances to automate nightly backups and long-term archives. The low-power design reduces energy draw by 15 %, while enterprise-grade reliability ensures 99.9 % data availability. Benefit: Streamlines backup workflows, minimizes operating costs, and ensures compliance-ready data protection.
High-Throughput RAID Storage for 4K Media Editing with 861683-B21-4TB SATA 6G HDD
Video production studios configure the 861683-B21-4TB SATA 6G 7200 RPM 3.5″ LFF HDD in RAID 0/5 arrays to support multi-stream 4K editing and rendering. The 6 Gb/s throughput and sustained 210 MB/s sequential performance enable real-time playback and accelerated encoding. Benefit: Delivers smooth multi-camera editing, cuts rendering time by 40 %, and provides a reliable high-bandwidth storage solution.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 861683-B21 |  843266-B21 |  858596-B21 |  857648-B21 |  P09687-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 | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SAS 12Gb/s | SATA III | SATA III | SAS 12Gb/s | SATA III |
| 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) | 128 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 250 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 210 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 300 TB/yr | 300 TB/yr | 180 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 9 Watts | 8 Watts | 8 Watts | 8.5 Watts | 8 Watts |
| Power Consumption (Idle) | 6 Watts | 4 Watts | 5 Watts | 5.2 Watts | 5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Helium Sealed | No | 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 | Rotational Vibration Sensors | Dual Actuator | Dual Actuator | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–55°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 861683-B21 Enterprise Performance HDD | 843266-B21 4TB Desktop HDD | 858596-B21 | 857648-B21 Enterprise Series SAS Hard Drive | P09687-B21 Enterprise 8TB SATA HDD |
| Height | 1 in | 1.02 inches | 1 inches | 1.03 inches | 1.03 inches |
| Width | 5.8 in | 5.79 inches | 5.8 inches | 5.79 inches | 5.8 inches |
| Depth | 4 in | 4.01 inches | 4 inches | 4.01 inches | 4.0 inches |
| Weight | 2.2 lbs | 1.5 lbs | 2.2 lbs | 3.64 lbs | 3.65 lbs |
Reviews & Ratings
S
Shahid Hussain
4
Stable throughput for enterprise storage.
R
Ramon Ortiz
5
Easy integration with Gen9 servers.
I
Imtiaz Ali
5
Reliable long term operation.
H
Hans Muller
4
Good capacity upgrade.
Questions & Answers
What is the storage capacity of the 861683-B21 HDD?
The 861683-B21 HDD offers 4 TB of raw storage capacity, ideal for bulk data, backups, and high-density archiving.
Which interface does the 861683-B21 use?
It uses a SATA 6 Gb/s interface, ensuring fast data transfer rates and broad compatibility with modern motherboards and controllers.
What is the rotational speed of this hard drive?
The drive spins at 7,200 RPM, delivering a balanced mix of performance and reliability for enterprise workloads.
What form factor is the 861683-B21 HDD?
This model is a 3.5-inch LFF (large form factor) drive, commonly used in desktop servers and high-capacity storage arrays.
Is the 861683-B21 compatible with RAID configurations?
Yes. It supports hardware RAID arrays and integrates seamlessly with common RAID controllers for redundancy and performance.
Does this drive support Native Command Queuing (NCQ)?
Yes. NCQ optimizes command execution order, reducing latency and improving throughput under multi-threaded workloads.
What is the mean time between failures (MTBF) of the drive?
The 861683-B21 is rated for a 1.2 million-hour MTBF, reflecting enterprise-grade reliability and long service life.
What is the average latency for read/write operations?
With a 7,200 RPM spindle speed, average rotational latency is approximately 4.17 ms, providing predictable performance.
What are the drive’s power consumption characteristics?
Typical operating power is 7.2 W, with idle power around 5 W, enabling energy-efficient operation in dense server environments.
What operating temperature range is supported?
The drive operates reliably between 5 °C and 55 °C and can be stored between –40 °C and 70 °C for safe handling.
Is the 861683-B21 hot-swappable?
Yes. Designed for enterprise enclosures, it supports hot-swap insertion and removal without system downtime.
What error recovery controls are included?
It features Time-Limited Error Recovery (TLER) to prevent drives from dropping out of RAID arrays during extended error correction.
How do I install the 861683-B21 in my server?
Mount the 3.5″ drive in a compatible tray, connect the SATA data and power cables, then configure it in your system’s firmware or OS.
Does the drive include a manufacturer warranty?
Yes. It ships with a standard 3-year limited warranty, covering defects in materials and workmanship.
What performance can I expect under sequential workloads?
You can achieve sustained sequential read/write speeds up to 200 MB/s, depending on host configuration and workload patterns.
How can I monitor the health of the 861683-B21?
Use SMART monitoring via your server’s management utility to track drive attributes, temperature, and error counts in real time.