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Reliable 15K SAS HDD with strong enterprise performance.
870765-B21
HP 900GB SAS 12G ENTERPRISE 15 K SFF 2.5 IN SC 512E
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Name:
870765-B21
- Description:
- HP 900GB SAS 12G ENTERPRISE 15 K SFF 2.5 IN SC 512E
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Hpe
- Condition:
- Warranty:
- 3
- List Price:
$1,223.08
- Price:
$1,125.248% off
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1
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870765-B21 Overview
870765-B21 is a high-performance HDD engineered for enterprise-level applications. It features a 3.5-inch form factor, SATA III interface, 7200 RPM spindle speed, 8 TB storage capacity, and a 256 MB cache. The drive incorporates advanced features including a helium-sealed design, vibration protection, and dual actuator technology while delivering a robust workload rating of 550 TB/yr and an MTBF of 1,200,000 hours to ensure long-term reliability under 24x7 operation.
Designed for versatile drive usage classes such as desktop, server, NAS, and surveillance, 870765-B21 offers dependable power efficiency with approximately 8.5 Watts of read/write power consumption and 5.0 Watts when idle. Its reliable performance, coupled with optimized thermal management and multi-bay support, makes it an ideal choice for data centers, enterprise storage systems, and other demanding applications.
870765-B21 price is $1,125.24, a 8% saving from the Hpe list price of $1,223.08. 870765-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 870765-B21 for additional pricing. Browse the full Hpe Server 2.5" Hard Drives series or explore all Hpe products.
870765-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)
- 8.5 Watts
- Power Consumption (Idle)
- 5.0 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
- 870765-B21 Enterprise HDD
- Height
- 1.0 inches
- Width
- 5.8 inches
- Depth
- 4.0 inches
- Weight
- 2.0 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 870765-B21 |  877831-B21 |  862163-B21 |  P05928-B21 |  765044-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 | Server | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SAS 12Gb/s | 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 | 10 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 128 MB | 256 MB | 256 MB | 128 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 250 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 550 TB/yr | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 6.8 Watts | 8.0 Watts | 7.0 Watts | 8.5 Watts |
| Power Consumption (Idle) | 5.0 Watts | 4.5 Watts | 6.0 Watts | 5.0 Watts | 6.5 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 | 870765-B21 Enterprise HDD | 877831-B21 4TB Enterprise SATA HDD | 862163-B21 Enterprise Performance 4TB SAS HDD | P05928-B21 | 765044-B21 Enterprise Helium-Sealed HDD |
| Height | 1.0 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.8 inches | 5.79 inches | 5.79 inches | 5.79 inches | 5.79 inches |
| Depth | 4.0 inches | 8.10 inches | 4.01 inches | 4.00 inches | 4 inches |
| Weight | 2.0 lbs | 1.2 lbs | 1.75 lbs | 1.85 lbs | 1.55 lbs |
Reviews & Ratings
S
Saad Younis
5
Installed in production servers. Runs smoothly.
K
Klara Brandt
4
Low latency for a spinning disk.
N
Noman Rafiq
5
Good option for legacy performance needs.
V
Victor Payne
5
Stable and predictable HDD behavior.
Questions & Answers
What are the main specifications of the HP 900GB SAS 12G 15K SFF 2.5" SC 512e (SKU: 870765-B21)?
The HP 870765-B21 drive offers 900 GB capacity, 12 Gb/s dual-port SAS interface, 15 000 RPM spindle speed, 2.5-inch SFF form factor and 512e advanced sector format.
Is the HP 900GB SAS 12G 15K SFF 2.5" drive compatible with HP ProLiant servers?
Yes. This drive is fully validated for HP ProLiant Gen8, Gen9 and Gen10 servers as well as HP MSA storage arrays with SAS backplanes.
What rotational speed does the HP 870765-B21 SAS drive deliver?
The drive spins at 15 000 RPM, providing low latency and high I/O performance for demanding enterprise workloads.
Which interface does the HP 900GB SAS 12G 15K SFF drive use?
It uses a 12 Gb/s Serial Attached SCSI (SAS) dual-port interface for high-speed data transfers and path redundancy.
What is the MTBF rating of the HP 870765-B21 drive?
The mean time between failures (MTBF) is rated at 2 million hours, reflecting enterprise-class reliability.
What warranty coverage comes with the HP 900GB SAS 12G 15K SFF drive?
HP provides a standard three-year limited warranty backed by global on-site support and parts replacement.
Can I use the HP 870765-B21 as a boot drive?
Yes. The drive supports operating system boot on HP ProLiant servers with compatible SAS HBAs or RAID controllers.
Is the HP 900GB SAS 12G 15K SFF drive hot-swappable?
Yes. It supports hot-swap insertion and removal in SAS-enabled 2.5" caddies for zero-downtime maintenance.
What power consumption does the HP 900GB SAS 15K drive require?
Active power consumption is approximately 9.5 W during read/write operations and 7.0 W at idle.
What enterprise workloads is the HP 870765-B21 optimized for?
It is optimized for transactional databases, virtualization, OLTP and other I/O-intensive enterprise applications.
What sustained transfer rates can I expect from this SAS drive?
Sustained sequential throughput reaches up to 204 MB/s over the 12 Gb/s SAS interface.
What acoustic levels does the HP 900GB SAS 12G 15K drive produce?
Acoustic emissions range from 2.7 Bels at idle to 2.9 Bels during seek operations.
Which error-recovery features are supported by the HP 870765-B21?
The drive includes SAS error recovery, sector remapping and advanced ECC to ensure data integrity.
How do I install the HP 900GB SAS 12G 15K SFF drive in my server?
Insert the drive into an available HP-approved 2.5" SAS caddy, slide it into the server bay, and the system auto-detects it on next boot.
Which operating systems support the HP 900GB SAS 15K drive?
It is supported on Windows Server, Linux distributions, VMware ESXi and other OS platforms with SAS driver support.
What is the difference between 512n and 512e sector formats on this drive?
This drive uses 512e (512-byte emulation) format, offering higher physical sector density while maintaining 512-byte logical compatibility.