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Compact M.2 SSD kit installed easily.
866844-B21
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HPE 240GB SATA M.2 2242 SSD KIT
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866844-B21
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- HPE 240GB SATA M.2 2242 SSD KIT
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866844-B21 Overview
866844-B21 is an HDD engineered for high-performance storage in demanding enterprise environments. This 3.5-inch drive features a SATA III interface, a spindle speed of 7200 RPM, an 8 TB storage capacity, and a 256 MB cache—all backed by a robust MTBF of 2,000,000 hours and an annual workload rating of 550 TB/yr that underscores its reliable rated hours of operation.
Optimized for critical applications, 866844-B21 is ideally suited for data centers, desktops, NAS systems, and surveillance setups. Its advanced design includes helium-sealed construction, vibration protection, and dual actuator technology, along with efficient power consumption of 8 Watts during read/write operations and 5 Watts when idle.
866844-B21 price is is available on request. Get immediate quote.
Request bulk order quote for 866844-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
866844-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
- 8 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
- 5–60°C
- Product Name
- Enterprise 866844-B21 8TB Helium-Sealed HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4 inches
- Weight
- 1.8 lbs
866844-B21 Use Case
Accelerating Remote IoT Gateways with HPE 866844-B21
In a distributed manufacturing network, operations teams deploy the HPE 240 GB SATA M.2 2242 SSD (866844-B21) in edge IoT gateways to store local analytics, firmware updates, and real-time logs. This compact module delivers sub-1 ms latency and industrial-grade endurance, reducing data-aggregation lag by 40% and ensuring continuous, low-power throughput for critical machine-to-cloud communications.
Optimizing Legacy Server Boot Performance in Enterprise Data Centers
IT architects retrofit rack-mounted Gen8/Gen9 servers with the HPE 240 GB SATA M.2 2242 SSD KIT (866844-B21) as dedicated boot drives. This upgrade cuts OS load times by up to 60%, lowers rack-space power draw, and streamlines firmware patches. The result: faster incident recovery, higher server availability, and a measurable drop in energy costs across hundreds of nodes.
Enhancing VDI Host Responsiveness for Small and Midsize Businesses
A managed-service provider integrates the HPE 866844-B21 SSD into compact ProLiant micro-servers to support virtual desktop infrastructure (VDI) deployments. With sustained 500 MB/s sequential reads and superior random I/O, end-user login times shrink by 50% while sustaining multi-session workloads. The outcome is a premium, cost-efficient desktop experience with simplified storage management.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 866844-B21 |  846434-B21 |  870753-B21 |  803197-B21 |  Q2T63A | |
|---|---|---|---|---|---|
| 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 | Desktop / Server / NAS / Surveillance | 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 | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 8 TB | 4 TB | 4 TB | 8 TB | 10 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 210 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 Watts | 8 Watts | 7.5 Watts | 8 Watts | 8.5 Watts |
| Power Consumption (Idle) | 5 Watts | N/A | 3.5 Watts | 6 Watts | 6.0 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | No | 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 | Enterprise 866844-B21 8TB Helium-Sealed HDD | 846434-B21 | 870753-B21 | 803197-B21 | Q2T63A 10TB Enterprise HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.0 inches | 1.03 inches |
| Width | 5.79 inches | 5.79 inches | 5.78 inches | 4.0 inches | 5.79 inches |
| Depth | 4 inches | 4.01 inches | 8.66 inches | 5.8 inches | 4.00 inches |
| Weight | 1.8 lbs | 2.35 lbs | 2.2 lbs | 1.25 lbs | 2.2 lbs |
Reviews & Ratings
N
Nida Hassan
4
Reliable boot performance.
J
Jussi Korpela
4
Stable for OS and utilities.
H
Hamid Raza
5
Good small SSD for server builds.
M
Matthew Young
5
Predictable performance from M.2 storage.
Questions & Answers
What is the HPE 240GB SATA M.2 2242 SSD KIT (SKU: 866844-B21)?
The HPE 240GB SATA M.2 2242 SSD KIT (866844-B21) is a server-grade solid-state drive module providing 240 GB of high-reliability storage in a compact M.2 2242 form factor, designed for HPE ProLiant and EdgeLine systems.
What are the key specifications of the HPE 240GB SATA M.2 2242 SSD KIT?
This SSD KIT features 240 GB capacity, SATA 6 Gb/s interface, M.2 2242 (22 × 42 mm) form factor, up to 560 MB/s sequential reads, 520 MB/s sequential writes, enterprise endurance, power-loss protection and a 5-year limited warranty.
Which servers and systems are compatible with the HPE 240GB SATA M.2 2242 SSD KIT?
The drive is validated for HPE Gen10 and Gen10 Plus ProLiant DL/ML series, Apollo platforms and EdgeLine servers with M.2 2242 slots. Always confirm compatibility via the HPE QuickSpecs for your exact system model.
How do I install the HPE 240GB SATA M.2 2242 SSD KIT?
Power down the server, insert the M.2 2242 SSD into the designated slot at a 30° angle, secure it with the provided screw, then power on and configure RAID or AHCI mode in the UEFI/BIOS settings.