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Large capacity SAS drive handled bulk data efficiently.
765259-B21
HPE 6TB SAS 12G Midline 7.2K LFF SC 1YR WTY HDD
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765259-B21
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- HPE 6TB SAS 12G Midline 7.2K LFF SC 1YR WTY HDD
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765259-B21 Overview
765259-B21 is a high-performance HDD engineered for enterprise storage environments. It features a 3.5-inch form factor, SAS 12Gb/s interface, and a spindle speed of 7200 RPM to deliver a storage capacity of 12 TB with a 256 MB cache, an annual workload rating of 550 TB/yr, and an MTBF of 2,000,000 hours for rated hours of reliable operation in server and data center applications.
This drive is optimized for desktops, servers, NAS, and surveillance systems, consuming 8.5 Watts during read/write operations and 5.0 Watts when idle. Advanced features include a helium-sealed design, dual actuator technology, and built-in vibration protection, making it a robust solution for data centers, enterprise storage arrays, and surveillance setups.
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765259-B21 Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Enterprise Storage
- Interface
- SAS 12Gb/s
- Form Factor
- 3.5-inch
- Storage Capacity
- 12 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
- 5–55°C
- Product Name
- 765259-B21 12TB Enterprise Helium-Sealed HDD
- Height
- 1.00 inches
- Width
- 5.79 inches
- Depth
- 4.00 inches
- Weight
- 1.80 lbs
765259-B21 Use Case
Enterprise Data Warehouse Scalability with HPE 6TB SAS 12G Midline HDD
In a global retail chain’s analytics cluster, IT architects integrate 765259-B21 HPE 6TB SAS 12G Midline 7.2K LFF HDDs into HPE ProLiant servers to expand storage capacity for real-time sales and inventory reporting. By adding high-density, 12Gb/s throughput drives, the business achieves 4PB of usable data warehouse capacity with sub-millisecond query performance. Outcome: accelerated decision insights, 30% lower storage TCO, and seamless scaling of BI workloads.
Secure Long-Term Video Surveillance Archival for Campus Security
A university’s security operations center deploys HPE 6TB SAS 12G Midline 7.2K LFF HDDs in a dedicated HPE MSA SAN array to store 4K IP camera footage over rolling 90-day retention. The 1-year warranty drives ensure sustained write performance under continuous recording and support fast playback for investigations. Outcome: guaranteed compliance with campus safety mandates, 45% cost reduction versus enterprise SSD tiers, and reliable long-term archival of critical video evidence.
Regulatory-Compliant Backup for Financial Services with HPE 6TB SAS HDD
A regional bank’s IT team implements 765259-B21 HPE 6TB SAS 12G Midline HDDs in a tiered backup appliance to meet strict data-retention rules and accelerate nightly full backups of transaction logs. The large-format, 7.2K-rpm drives deliver predictable sustain writes and 12Gb/s SAS connectivity, enabling complete backups in under four hours. Outcome: ensured SOX and GDPR compliance, 25% faster restore times, and optimized backup window without hardware upgrades.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 765259-B21 |  846510-B21 |  861681-B21 |  N9Y46A |  846514-B21 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SAS 12Gb/s | 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 | 12 TB | 8 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 | 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 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 | 300 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 8 Watts | 8.5 Watts | 8 Watts | 8 Watts |
| Power Consumption (Idle) | 5.0 Watts | 5 Watts | 5.5 Watts | 6 Watts | 5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | No |
| 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 | 5–55°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | 765259-B21 12TB Enterprise Helium-Sealed HDD | 846510-B21 | 861681-B21 Helium-Sealed Enterprise HDD | N9Y46A Enterprise Performance HDD | 846514-B21 High Performance HDD |
| Height | 1.00 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.0 inches |
| Width | 5.79 inches | 5.79 inches | 4 inches | 5.79 inches | 4.0 inches |
| Depth | 4.00 inches | 4.01 inches | 5.79 inches | 4.00 inches | 5.8 inches |
| Weight | 1.80 lbs | 1.8 lbs | 2.1 lbs | 2.10 lbs | 1.2 lbs |
Reviews & Ratings
F
Faisal Mehmood
4
Consistent speeds under continuous load.
M
Marco Rossi
4
Smooth installation in Gen9 servers.
W
Waleed Khan
5
Good choice for data growth.
S
Sven Karlsson
5
Dependable enterprise disk.
Questions & Answers
What is the HPE 6TB SAS 12G Midline 7.2K LFF SC 1YR WTY HDD (SKU: 765259-B21)?
The HPE 765259-B21 is a 6 TB, 12 Gb/s SAS midline hard drive in a 3.5" form factor with a 7,200 RPM spindle speed and a 1-year warranty.
Which HPE servers and storage systems support SKU 765259-B21?
The drive is validated for HPE ProLiant Gen8/Gen9/Gen10 servers, HPE MSA and 3PAR arrays, and HPE Synergy enclosures with SAS midline bays.
What performance can I expect from a 12 Gb/s SAS interface?
The 12 Gb/s SAS interface delivers up to 1.2 GB/s theoretical throughput for high-bandwidth midline storage applications.
How does a 7,200 RPM speed benefit storage workloads?
At 7,200 RPM, this drive balances data transfer rate and power consumption for reliable sequential throughput in bulk-capacity environments.
What does LFF SC mean on this HPE HDD?
LFF SC signifies a Large Form Factor (3.5") drive with a Single-Controller SAS interface for midline storage.
Is the HPE 6TB SAS 12G Midline drive hot-swappable?
Yes, the HDD supports hot-plug operations in supported HPE servers and storage enclosures for zero-downtime replacements.
Can I use SKU 765259-B21 in RAID configurations?
Yes, the drive is fully compatible with hardware RAID controllers (RAID 0, 1, 5, 6, 10, 50, 60) supported by HPE Smart Array solutions.
What is included in the 1-year warranty for this HPE HDD?
HPE’s 1-year warranty covers hardware defects, repair or replacement services, and HPE global support with next-business-day delivery.
How do I install the HPE 765259-B21 drive into my server?
Simply insert the drive into an empty SAS midline bay, secure the caddy, and verify detection via HPE Smart Storage Administrator.
What are the key performance specifications of this midline HDD?
Key specs include 6 TB capacity, 7,200 RPM, 12 Gb/s SAS interface, ~178 MB/s sustained transfer rate, and 600K hours MTBF.
What workloads are ideal for a midline SAS 7.2K HDD?
This drive is optimized for sequential-intensive workloads such as backup, archiving, media streaming, and cold data storage.
How can I verify compatibility with my HPE storage enclosure?
Use the HPE QuickSpecs or the HPE Support Center online compatibility matrix to confirm support for SKU 765259-B21.
What environmental specifications apply to this 3.5" SAS drive?
Operating temperature is 5 °C to 55 °C, non-operating −40 °C to 70 °C, with 0.5 G vibration (operating) and 1.04 G (non-operating).
Does the HPE 6TB SAS midline HDD support hardware encryption?
No, this midline model does not include self-encrypting drive (SED) features; use HPE Secure Encryption or software solutions instead.
How can I monitor drive health and status?
Monitor SMART attributes and drive status via HPE Smart Storage Administrator or iLO Integrated Management Log for proactive alerts.
Where can I order replacement parts or service for SKU 765259-B21?
Contact your HPE authorized reseller or visit the HPE Parts & Purchases portal to request spares and support services.