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870765-B21
HP 900GB SAS 12G ENTERPRISE 15 K SFF 2.5 IN SC 512E
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.

Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
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| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reliable 15K SAS HDD with strong enterprise performance.
Installed in production servers. Runs smoothly.
Low latency for a spinning disk.
Good option for legacy performance needs.
Stable and predictable HDD behavior.
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.
Yes. This drive is fully validated for HP ProLiant Gen8, Gen9 and Gen10 servers as well as HP MSA storage arrays with SAS backplanes.
The drive spins at 15 000 RPM, providing low latency and high I/O performance for demanding enterprise workloads.
It uses a 12 Gb/s Serial Attached SCSI (SAS) dual-port interface for high-speed data transfers and path redundancy.
The mean time between failures (MTBF) is rated at 2 million hours, reflecting enterprise-class reliability.
HP provides a standard three-year limited warranty backed by global on-site support and parts replacement.
Yes. The drive supports operating system boot on HP ProLiant servers with compatible SAS HBAs or RAID controllers.
Yes. It supports hot-swap insertion and removal in SAS-enabled 2.5" caddies for zero-downtime maintenance.
Active power consumption is approximately 9.5 W during read/write operations and 7.0 W at idle.
It is optimized for transactional databases, virtualization, OLTP and other I/O-intensive enterprise applications.
Sustained sequential throughput reaches up to 204 MB/s over the 12 Gb/s SAS interface.
Acoustic emissions range from 2.7 Bels at idle to 2.9 Bels during seek operations.
The drive includes SAS error recovery, sector remapping and advanced ECC to ensure data integrity.
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.
It is supported on Windows Server, Linux distributions, VMware ESXi and other OS platforms with SAS driver support.
This drive uses 512e (512-byte emulation) format, offering higher physical sector density while maintaining 512-byte logical compatibility.