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861752-B21
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- HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wty 512e HDD
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
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861752-B21
HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wt...
$798.20
$271.39
38 in Global Warehouse
$271.39
66% off
TRUSTED, TRIED, PROVEN
861752-B21 Overview
861752-B21 is a high-performance HDD built in a 3.5-inch form factor featuring a SATA III interface and a 7200 RPM spindle speed. It offers a 4 TB storage capacity with a 256 MB cache, making it a dependable solution for high-demand enterprise storage systems.
Engineered for robust environments, the drive is rated with an annual workload of 550 TB/yr and is designed to meet rigorous reliability standards with a rated lifespan exceeding 1,200,000 hours per drive. With advanced features including helium-sealed construction, vibration protection, and dual actuator technology, along with efficient power consumption of 8 Watts during read/write operations and 5 Watts in idle mode, 861752-B21 is ideally suited for data centers, desktops, NAS, and surveillance applications.
What is the price of 861752-B21?
Lowest price of 861752-B21 is $ 271.39. Shop now! Get further exclusive discounts with bulk quotation on 861752-B21
Explore more options from Hard Drives & Ssds or explore other Hpe products.
861752-B21 Specifications
| Product Type | Hard Drive |
| Drive Type | HDD |
| Use Case | 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 250 MB/s |
| Annual Workload Rating | 550 TB/yr |
| Power Consumption (Read/Write) | 8 Watts |
| Power Consumption (Idle) | 5 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 | 861752-B21 Enterprise HDD |
| Height | 1.03 |
| Width | 4.00 |
| Depth | 5.79 |
| Weight | 3.25 |
861752-B21 Use Case
Edge Video Surveillance Bulk Storage for Retail Chains
A national retail chain deploys HPE ProLiant DL380 servers with 861752-B21-HPE 4TB SATA 6G Midline 7.2K LFF (3.5in) SC 1yr Wty 512e HDD to record continuous 1080p video from hundreds of in-store cameras. The high-capacity, sequential I/O architecture delivers reliable 24/7 writes while reducing per-TB cost by 30%, ensuring compliant video retention and rapid retrieval for loss prevention and audit support.
Cold Data Archive in HPE StoreOnce Backup Systems
An enterprise IT department integrates 861752-B21-HPE 4TB SATA 6G Midline drives into HPE StoreOnce appliances to offload year-old backup snapshots and regulatory archives. With 7.2K RPM performance optimized for sequential reads/writes and proven HPE compatibility, the solution lowers total cost of ownership by 25% and accelerates restore times, meeting compliance SLAs without over-provisioning high-cost SSD tiers.
Secondary VM Storage for SMB Virtualization
A mid-sized professional services firm scales its VMware cluster by adding an HPE ProLiant server populated with 861752-B21-HPE 4TB SATA 6G Midline HDDs as secondary datastores for dev/test and file-share VMs. The balance of large capacity, consistent 7.2K RPM throughput, and HPE Factory Express integration delivers predictable performance, 40% lower acquisition cost versus enterprise SAS, and seamless expansion as project workloads grow.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Advanced Features | Dual Actuator | Dual Actuator | Rotational Vibration Sensors | Dual Actuator | Dual Actuator |
| Annual Workload Rating | 180 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 180 TB/yr |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Cache (Buffer Size) | 128 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| 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 210 MB/s |
| Depth | 8.37 inches | 5.79 | 4.00 inches | 5.8 inches | 4.01 inches |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Encryption Support | No | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Height | 1.03 inches | 1.03 | 1.03 inches | 1.0 inches | 1.03 inches |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Interface | SATA III | SATA III | SAS 12Gb/s | SATA III | SATA III |
| Operating Temperature | 5–60°C | 5–55°C | 5–60°C | 5–55°C | 5–60°C |
| Power Consumption (Idle) | 5 Watts | 5 Watts | 6 Watts | 4 Watts | 4 Watts |
| Power Consumption (Read/Write) | 8 Watts | 8 Watts | 8 Watts | 8 Watts | 7.5 Watts |
| Product Name | P04529-B21 | 861752-B21 Enterprise HDD | 881779-B21 Enterprise Series SAS Hard Drive | 846528-B21 | 818367-B21 4TB Helium Sealed Desktop HDD |
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Storage Capacity | 4 TB | 4 TB | 8 TB | 4 TB | 4 TB |
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Weight | 1.8 lbs | 3.25 | 2.0 lbs | 2.2 lbs | 1.6 lbs |
| Width | 5.78 inches | 4.00 | 5.79 inches | 5.8 inches | 5.79 inches |
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Questions & Answers
Q
What is the storage capacity of the HPE 861752-B21 HDD?
A
The HPE 861752-B21 hard drive offers 4TB of storage capacity, ideal for large data sets and backup applications.
Q
Which interface does the HPE 861752-B21 use?
A
This HPE 4TB Midline HDD uses a SATA 6Gb/s interface for reliable data transfer and broad server compatibility.
Q
What is the rotational speed of the HPE 861752-B21 drive?
A
The drive spins at 7,200 RPM, balancing performance and energy efficiency for midline storage workloads.
Q
What form factor is the HPE 861752-B21?
A
The HPE 861752-B21 is a large form factor (LFF) 3.5-inch hard drive, designed for standard rack and tower servers.
Q
Is the HPE 861752-B21 hot-swappable?
A
Yes. The HPE 861752-B21 is hot-pluggable, allowing safe drive replacement without powering down your server.
Q
What does 512e sector format mean for this HDD?
A
512e indicates the drive emulates 512-byte sectors on a native 4K physical sector, ensuring compatibility with legacy operating systems.
Q
Which HPE servers are compatible with the 861752-B21?
A
This midline drive is compatible with HPE ProLiant Gen8, Gen9, Gen10 and select Apollo and Synergy servers.
Q
What warranty does the HPE 861752-B21 include?
A
The HPE 861752-B21 comes with a one-year limited warranty backed by HPE’s global support network.
Q
What is the typical use case for the HPE 4TB Midline HDD?
A
It’s optimized for secondary storage tasks such as backups, archiving and nearline storage in data centers.
Q
How do I install the HPE 861752-B21 in my server?
A
Slide the LFF drive into an available SATA bay or caddy on your HPE server, secure it and allow the system BIOS to recognize it.
Q
What is the Mean Time Between Failures (MTBF) for this HDD?
A
The MTBF for the HPE 861752-B21 is rated at 1.2 million hours, ensuring reliable operation in enterprise environments.
Q
How does the HPE 861752-B21 compare to enterprise HDDs?
A
Midline HDDs like the 861752-B21 offer lower cost per gigabyte than enterprise drives, with slightly lower workload ratings and performance.
Q
Can I use the HPE 861752-B21 in RAID configurations?
A
Yes. This drive supports standard SATA RAID arrays when paired with an HPE Smart Array controller.
Q
What cooling and power requirements does this HDD have?
A
The HPE 861752-B21 consumes up to 6.8W during read/write and requires standard server airflow to maintain optimal temperatures.
Q
Where can I purchase genuine HPE 861752-B21 drives?
A
Authorized HPE resellers, the HPE Store and certified channel partners sell genuine HPE 861752-B21 hard drives.
Q
How do I verify the firmware version on my HPE 861752-B21?
A
Use the HPE Smart Storage Administrator or server BIOS utility to view detailed drive information, including firmware revision.
