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NVMe RI SSD offers excellent low-latency reads.
877988-B21
HPE 4TB NVMe x4 RI SFF SCN DS SSD
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877988-B21
- Description:
- HPE 4TB NVMe x4 RI SFF SCN DS SSD
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877988-B21 Overview
877988-B21 is a 4 TB, 3.5-inch HDD with a SATA III interface, spinning at 7200 RPM and equipped with a 128 MB cache. It is engineered for high performance and reliability with a robust workload rating of 180 TB/yr, an MTBF of 1,000,000 hours, and rated for demanding operational environments.
Designed for use in desktops, servers, NAS, surveillance systems, and enterprise storage solutions, 877988-B21 features efficient power consumption at 8 Watts (read/write) and 6 Watts (idle) along with built-in vibration protection. Its precision dimensions—1.03 inches in height, 5.79 inches in width, and 4.00 inches in depth—and a weight of 2.9 lbs further ensure compatibility in multi-bay configurations and diverse computing setups.
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877988-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)
- 128 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 180 TB/yr
- Power Consumption (Read/Write)
- 8 Watts
- Power Consumption (Idle)
- 6 Watts
- Encryption Support
- No
- Helium Sealed
- No
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- N/A
- Operating Temperature
- 5–60°C
- Product Name
- 877988-B21 4TB Enterprise SATA III HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.00 inches
- Weight
- 2.9 lbs
877988-B21 Use Case
Enterprise OLTP Database Acceleration with 877988-B21 HPE 4TB NVMe x4 SSD
In mission-critical SQL Server and Oracle OLTP deployments on HPE ProLiant servers, the 877988-B21 HPE 4TB NVMe x4 RI SFF SCN DS SSD delivers sub-100 µs latency and up to 250 K random read IOPS. This high-throughput, low-latency storage accelerates transaction processing by up to 60 %, reduces I/O bottlenecks, and consolidates multiple database tiers onto fewer drives, yielding faster queries, improved SLA compliance, and lower TCO.
VDI Boot Storm Mitigation in HPE Synergy Environments
In large-scale virtual desktop infrastructure (VDI) rollouts using HPE Synergy or ProLiant servers, the 4 TB NVMe x4 SSD (877988-B21) cuts boot-storm I/O contention by 80 %, enabling hundreds of simultaneous user logins under 10 seconds. By delivering sustained 3 GB/s throughput and 5 000 TBW endurance, it increases VM density per server, streamlines desktop management, and enhances end-user experience with consistent, predictable performance.
AI/ML Training Data Pipeline Optimization
For AI/ML model training and real-time inference on HPE Apollo or ProLiant clusters, the 877988-B21 HPE 4 TB NVMe x4 SSD provides high-bandwidth sequential reads of up to 3.2 GB/s and robust random IOPS for iterative data access. This SSD minimizes data-loading delays, accelerates feature extraction by over 50 %, and supports sustained workloads with enterprise-grade reliability, enabling faster model convergence, reduced training cycles, and quicker time-to-insight.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 877988-B21 |  875317-B21 |  781516-B21 |  P19913-B21 |  831737-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 | 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 | 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 | 8 TB | 4 TB | 4 TB | 10 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 128 MB | 256 MB | 64 MB | 128 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 | 180 TB/yr | 550 TB/yr | 180 TB/yr | 180 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8 Watts | 7 Watts | 8.0 Watts |
| Power Consumption (Idle) | 6 Watts | 4 Watts | 5 Watts | 4 Watts | 5.0 Watts |
| Encryption Support | No | No | 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 | N/A | Dual Actuator | N/A | Dual Actuator | Dual Actuator |
| Operating Temperature | 5–60°C | 5–60°C | 5–55°C | 5–60°C | 5–55°C |
| Product Name | 877988-B21 4TB Enterprise SATA III HDD | 875317-B21 Enterprise SATA HDD | 781516-B21 4TB Enterprise HDD | P19913-B21 | 831737-B21 Enterprise Capacity 10TB SATA III 7200 RPM HDD |
| Height | 1.03 inches | 1.63 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.79 inches | 5.79 inches | 5.8 inches | 5.79 inches | 5.79 inches |
| Depth | 4.00 inches | 4.00 inches | 4.0 inches | 4.00 inches | 4.00 inches |
| Weight | 2.9 lbs | 1.55 lbs | 1.5 lbs | 2.0 lbs | 2.20 lbs |
Reviews & Ratings
S
Sumbul Hassan
5
Great for analytics and reporting systems.
R
Radoslav Marek
4
Stable NVMe performance under load.
W
Waqas Ali
5
Noticeable speed improvement after install.
J
James Thornton
5
High-performing NVMe SSD.
Questions & Answers
What is the storage capacity of the HPE 877988-B21 SSD?
The HPE 877988-B21 SSD delivers 4 TB of raw NVMe storage capacity, optimized for large-scale enterprise data workloads.
Which interface does the HPE 4TB NVMe x4 RI SFF SCN DS SSD use?
This drive uses a PCIe Gen3 x4 NVMe interface (U.2 SFF-2 form factor), providing low-latency, high-throughput connectivity to your HPE server.
What form factor is the HPE 877988-B21 SSD?
The SSD is built in a 2.5-inch small form factor (SFF) U.2 tray, supporting hot-plug insertion and removal in HPE ProLiant bays.
What sequential performance can I expect from this 4 TB NVMe SSD?
You can achieve up to 3,200 MB/s sequential read and up to 2,200 MB/s sequential write for high-bandwidth workloads.
What random IOPS performance does the HPE 877988-B21 deliver?
The drive delivers up to 500,000 random read IOPS and up to 120,000 random write IOPS for demanding transactional applications.
Is the HPE 4TB NVMe x4 RI SFF SCN DS SSD compatible with HPE ProLiant servers?
Yes. It is fully validated for HPE ProLiant DL/ML and Synergy platforms with U.2 NVMe bays and the latest firmware.
How do I install the HPE 877988-B21 SSD in my server?
Slide the SSD into an available U.2 SFF bay until it clicks, then confirm presence and health via HPE iLO or Smart Array controller.
Does this SSD support hot-plug installation?
Yes. The U.2 form factor and HPE tray enable hot-plug replaceability without powering down the server.
What is the endurance rating (TBW or DWPD) of this SSD?
The drive offers up to 1.2 drive-writes-per-day (DWPD) over a five-year service life, supporting sustained write-intensive workloads.
What is the MTBF reliability rating for the HPE 877988-B21?
This SSD is rated at 2 million hours mean time between failures (MTBF), meeting enterprise-class reliability standards.
Does the HPE 4TB NVMe x4 SSD support hardware encryption?
Yes. It includes optional AES-256 self-encrypting drive (SED) support to protect data at rest with zero performance impact.
Is this SSD covered by an HPE warranty?
The HPE 877988-B21 comes with a standard five-year warranty and optional HPE Support Services for global on-site response.
Can I combine multiple HPE 4TB NVMe SSDs in a RAID array?
Absolutely. You can configure them in RAID 0/1/5/6/10 using HPE Smart Array adapters or NVMe RAID solutions for redundancy and performance.
Which operating systems support the HPE NVMe x4 SSD?
Major enterprise OS platforms including VMware ESXi, Microsoft Windows Server, and Linux distributions (RHEL, SUSE, Ubuntu) fully support this drive.
Does this SSD require specific firmware versions?
HPE recommends running the latest HPE NVMe firmware, available via the HPE Support Center, to ensure compatibility and peak performance.
How can I monitor drive health and update firmware?
Use HPE iLO, HPE Smart Storage Administrator, or the HPE Service Pack for ProLiant to view SMART metrics and apply firmware updates.