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High-capacity SAS RI SSD performs consistently.
872394-B21
HP 3.84TB 12GB/S 2.5-INCH SFF SAS RI_X000D_ DS SSD_X000D_
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872394-B21
- Description:
- HP 3.84TB 12GB/S 2.5-INCH SFF SAS RI_X000D_ DS SSD_X000D_
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872394-B21 Overview
872394-B21 is a high-performance HDD designed for enterprise-grade applications. This drive features a 3.5-inch form factor paired with a SATA III interface and operates at a 7200 RPM spindle speed. It offers 4 TB of storage capacity with a 256 MB cache, and it is engineered for reliability with an annual workload rating of 550 TB/yr and an MTBF of 1,000,000 hours to support rigorous, continuous operations.
Optimized for diverse use cases including data centers, desktops, NAS, and surveillance systems, 872394-B21 incorporates advanced technologies such as helium-sealed construction, vibration protection, and dual actuator technology. Its efficient power consumption of 8 Watts during read/write operations and 6 Watts when idle ensures robust performance in demanding environments while maintaining energy efficiency.
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Request bulk order quote for 872394-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
872394-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
- 4 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 210 MB/s
- Annual Workload Rating
- 550 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 6 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
- 872394-B21 Enterprise Helium Sealed HDD
- Height
- 1.03
- Width
- 4.00
- Depth
- 5.79
- Weight
- 2.20
872394-B21 Use Case
Accelerating Mission-Critical OLTP Databases with 872394-B21-HP 3.84TB SAS SSD
In a global financial services data center, the 872394-B21-HP 3.84TB 12Gb/s 2.5″ SFF SAS RI DS SSD powers high-frequency trading and real-time transaction processing. By delivering sustained 350K IOPS and sub-millisecond latency, it ensures 99.99% database availability, reduces end-user query times by 30%, and maintains compliance with stringent SLAs.
Scaling Enterprise VDI Deployments Using 872394-B21-HP 3.84TB SAS SSD
A multinational corporation consolidates its VMware Horizon environment on servers equipped with the 872394-B21-HP 3.84TB 12Gb/s 2.5″ SFF SAS RI DS SSD. The solution supports 2,000+ concurrent virtual desktops, boosts IOPS by 40%, and cuts storage footprint by 25%. Employees experience faster boot-storms, seamless application launches, and consistent performance under peak loads.
Real-Time Big Data Analytics on 872394-B21-HP 3.84TB SAS SSD
A retail analytics provider deploys Hadoop clusters with 872394-B21-HP 3.84TB 12Gb/s 2.5″ SFF SAS RI DS SSDs to ingest and index streaming sales data. The high-density SSD array processes 5TB of new daily records with 200K sustained IOPS, accelerating report generation from hours to minutes. Business users gain actionable insights on pricing, inventory trends, and customer behavior in real time.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 872394-B21 |  862163-B21 |  619291-B21 |  507284-001 |  846436-B21 | |
|---|---|---|---|---|---|
| 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 | Server | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SAS 12Gb/s | 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 | 4 TB | 10 TB | 4 TB | 4 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 210 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 Watts | 8.0 Watts | 8 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 6 Watts | 6.0 Watts | 5 Watts | 5 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 | No | 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 | N/A | Dual Actuator |
| Operating Temperature | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 872394-B21 Enterprise Helium Sealed HDD | 862163-B21 Enterprise Performance 4TB SAS HDD | 619291-B21 | 507284-001 Enterprise HDD | 846436-B21 High Performance Enterprise HDD |
| Height | 1.03 | 1.03 inches | 1.03 inches | 1 inch | 1.03 inches |
| Width | 4.00 | 5.79 inches | 4.0 inches | 4 inches | 5.79 inches |
| Depth | 5.79 | 4.01 inches | 5.8 inches | 5.79 inches | 8.74 inches |
| Weight | 2.20 | 1.75 lbs | 1.8 lbs | 2.0 lbs | 1.6 lbs |
Reviews & Ratings
M
Mahnoor Khan
5
Ideal for read-heavy workloads.
F
Filip Horvat
4
Stable firmware and strong read speeds.
S
Saad Qureshi
5
No performance drops observed.
G
Glen Porter
5
Enterprise-ready SSD.
Questions & Answers
What is the storage capacity and form factor of the HP 872394-B21 SSD?
The HP 872394-B21 is a 3.84 TB solid-state drive in a 2.5-inch small form factor (SFF) optimized for rack-mounted storage.
Which interface and throughput does the HP 3.84 TB 12 GB/s SAS SSD support?
It uses a 12 Gb/s Serial Attached SCSI (SAS) interface, delivering enterprise-class read/write throughput over SAS-3 with backward compatibility to SAS-2 (6 Gb/s).
What performance can I expect in random I/O for this SSD?
This SSD delivers up to 250,000 IOPS for random reads and up to 50,000 IOPS for random writes, ideal for high-transaction workloads.
Is the HP 872394-B21 SSD hot-pluggable in servers and storage enclosures?
Yes. The drive is hot-swappable in any compatible 2.5″ SAS bay, enabling non-disruptive maintenance and upgrades.
What reliability metrics define this HP enterprise SSD?
It features a Mean Time Between Failures (MTBF) of 2 million hours and enterprise-grade ECC with end-to-end data protection.
What endurance rating does the HP 3.84 TB SAS SSD offer?
This drive is rated for enterprise workloads at 1 DWPD (Drive Writes Per Day) over a 5-year lifecycle, supporting sustained write-intensive applications.
Which server and storage systems is this SSD compatible with?
Fully validated on HPE ProLiant servers, HPE Apollo storage, and HPE Smart Array controllers for seamless integration and firmware updates.
Does the HP 872394-B21 support hardware encryption?
Yes. It supports SED-ready secure erase and FIPS 140-2 compliant encryption when paired with an HPE controller that enables data-at-rest security.
What are the power consumption specifications?
Active power is typically 8 W, while idle power is 3 W, delivering an efficient balance of performance and energy savings.
Can I use this SSD in RAID configurations?
Absolutely. It is certified for RAID with HPE Smart Array controllers, ensuring optimized performance and data protection across multiple drives.
What are the typical use cases for the HP 3.84 TB SAS SSD?
Ideal for virtualization, database acceleration, analytics, and high-performance computing where low latency and high IOPS are critical.
How do I install the HP 872394-B21 in my server?
Slide the SSD into an available 2.5″ SAS hot-swap bay until it clicks, then verify recognition in your server’s RAID or BIOS utility.
Does this SSD require firmware updates?
Occasional firmware updates are available via the HPE Support Center to ensure optimal performance, reliability, and compatibility.
What kind of warranty covers the HP 3.84 TB SAS SSD?
This drive is backed by a 3-year HPE limited warranty with optional extension and support services for added protection.
Is the HP 872394-B21 backwards compatible with older SAS controllers?
Yes, it auto-negotiates down to SAS-2 (6 Gb/s) speeds, ensuring compatibility with legacy SAS infrastructures.
How does the HP 3.84 TB SAS SSD optimize data center efficiency?
By delivering high IOPS per watt, enterprise endurance, and hot-swap capability, it reduces total cost of ownership and maximizes uptime.